Finding a high-quality, free "complete" explainer sound effects library usually involves piecing together specific packs or using community-driven platforms. While many "premium" libraries like the Explainer Video Sound Kit (1,200+ sounds) or the Explainer Video SFX Library exist, several reliable sources offer specialized "explainer-style" sounds for free. Top Sources for Free Explainer SFX
These libraries focus on the "pops," "whooshes," and "clicks" essential for infographics and motion graphics:
Pixabay Explainer SFX Library: Offers a wide variety of royalty-free infographic pops, UI clicks, and notification sounds specifically tagged for explainer videos. All downloads are free for commercial and non-commercial use. Explore Pixabay Explainer Sounds.
YouTube Audio Library: A staple for creators, found within YouTube Studio. It contains a massive, searchable database of "Pop," "Whoosh," and "Drip" sounds that are completely free and copyright-safe for any platform.
Zapsplat: One of the largest free SFX sites with over 100,000 sounds. They have a dedicated "Infographic & Explainer" category featuring high-quality professional recordings.
Krotos Studio (Free Packs): Often provides professional-grade starter packs. While they have premium software, their free SFX libraries are highly regarded for motion design. Premium "Complete" Kits (Paid)
If you are looking for a singular, massive "report-style" library that covers every possible motion graphic need, these industry-standard kits are frequently cited:
Explainer Video Sound Kit (Epic Stock Media): Features 1,200+ sounds including 200+ motion/animation whooshes, 72 bubbles/pops, and 422 Foley sounds. It is currently available on sites like Sonniss for ~$51.60 $86.00.
Explainer Sounds Vol. 1 & 2: A collection of 200+ sounds per volume, delivered in high-fidelity 24-bit / 96 kHz format. These are available through A Sound Effect. Quick Breakdown of Essential Explainer Sounds
To ensure your "complete" library is actually effective, look for these specific categories: Explainer Sounds Vol. 2 | transitions Sound Effects Library
The Ultimate Guide to Explainer Sound SFX Libraries: Enhance Your Motion Graphics for Free
In the world of video production, sound is 50% of the experience. This is especially true for explainer videos, where abstract motion graphics need auditory "weight" to feel real. If you’re looking to level up your production value without breaking the bank, finding a high-quality Explainer Sound SFX Library for free download is the smartest move you can make.
In this guide, we’ll explore what makes a great explainer SFX, where to find them, and how to use them effectively. What is an Explainer SFX Library?
Unlike cinematic soundscapes or literal foley (like footsteps), explainer SFX are often stylized and rhythmic. They are designed to emphasize movement, highlight UI/UX elements, and maintain a high-energy pace. A typical library includes: Pops and Clicks: For buttons and toggles.
Whooshes and Swishes: To accent transitions and sliding text.
Bells and Chimes: For positive reinforcements or "idea" moments. Digital Beeps: For data visualizations and tech themes. Paper Crumples: For organic, tactile transitions. Top Sources for Free Explainer SFX Downloads
When searching for a free library, you want to ensure the sounds are Royalty-Free and available for commercial use. Here are the top-tier resources: 1. BBC Sound Effects
The BBC has released a massive archive of over 33,000 sound effects. While many are field recordings, their "Mechanical" and "Communication" categories are goldmines for unique explainer accents. 2. FreeSFX
This site offers a dedicated "Multimedia" section. You can find everything from sleek interface pings to cartoonish accents that fit the "bubbly" aesthetic of many modern 2D explainers. 3. ZapSplat
ZapSplat is a favorite among YouTubers. They have thousands of professionally recorded UI sounds and "office" foley that are perfect for corporate explainers. (Note: They require an attribution link if you use the free tier). 4. Adobe Audition Sound Effects
Adobe offers thousands of uncompressed, royalty-free sound effects grouped by category. Look for the "Imaging Elements" pack—it’s specifically designed for transitions and accents. How to Choose the Right Sounds for Your Project
Not all SFX are created equal. To ensure your video feels professional, follow these three rules: Match the Visual Weight
If your animation features thin, elegant lines, use "light" sounds like high-pitched clicks or soft whistles. If your visuals are bold, chunky, and 3D, use "heavier" sounds with more bass, like deep thuds or mechanical whirs. Less is More
New editors often over-saturate their timeline with sound. Every single movement doesn't need an SFX. Focus on the key actions: The appearance of a new character. A major scene transition. The "Call to Action" at the end. Layer Your Sounds
Don't just use one "whoosh." Layer a "whoosh" with a "camera shutter" click to create a custom sound that feels unique to your brand. Legal Check: Understanding Licenses
Before you click that download button, check the license type:
Creative Commons 0 (CC0): Use it for anything, no credit needed.
Creative Commons Attribution: You must credit the creator in your video description or credits.
Personal Use Only: You cannot use these for client work or monetized YouTube videos. Conclusion
A professional Explainer Sound SFX Library is the "secret sauce" that transforms a flat animation into an engaging story. By utilizing free resources like ZapSplat and the BBC archive, you can build a versatile toolkit that saves you time and money.
Pro Tip: Once you download your free SFX, organize them into folders like "Transitions," "UI Clicks," and "Impacts" to speed up your workflow on your next project!
The Ultimate Guide to Finding a High-Quality Explainer Sound SFX Library for Free Download
In the world of video production, sound design is often the "secret sauce" that separates a professional explainer video from an amateur one. While your script and animations do the heavy lifting for information, sound effects (SFX) provide the emotional cues and tactile feedback that keep an audience engaged.
If you are looking for an Explainer Sound SFX Library free download, you aren't just looking for noise—you’re looking for clarity, rhythm, and personality. Here is everything you need to know about finding and using the best free audio assets for your next project. Why Sound Effects Matter in Explainer Videos
Explainer videos are designed to simplify complex ideas. Because they are often fast-paced and information-dense, SFX serve several critical functions:
Emphasis: A "pop" or "ding" highlights a key statistic or a new feature.
Transition: A "whoosh" or "swoosh" helps the viewer’s brain transition from one scene to the next without losing the thread.
Engagement: Subtle UI sounds (clicks, typing, notifications) make digital products feel real and interactive.
Pacing: Sound provides a rhythmic backbone that helps the animation feel fluid rather than robotic. What’s Inside a Professional Explainer SFX Library?
When you download a dedicated library, you should look for these essential categories: 1. UI and Digital Interactions These are the bread and butter of SaaS and tech explainers. Clicks and Taps: For button presses. Pop-ups: Light, airy sounds for appearing menus.
Error/Success Tones: Soft "blips" for successful actions and muted "thuds" for errors. 2. Motion and Transition Sounds These give your animations "weight."
Whooshes: Various speeds (fast, slow, organic, or synthetic) to match object movement. Zaps: For laser-fast transitions or high-energy reveals.
Slides: Mechanical or digital sliding sounds for panels and sidebars. 3. Character and Organic Effects If your video features characters, you need life-like cues. Footsteps: Subtle thumps to ground the animation.
Hand Gestures: Soft rustles or "swishes" when a character points or waves. Explainer Sound SFX Library Free Download
Environment Ambience: A light office hum or park birds to set the scene. Top Sources for Free Explainer SFX Downloads
Finding high-quality sounds that are also royalty-free is the biggest challenge. Here are the most reliable platforms to find an explainer sound SFX library for free: 1. BBC Sound Effects
The BBC has made thousands of professional-grade sound effects available for free for personal, educational, or research purposes. Their library is massive and includes incredibly high-fidelity organic sounds. 2. Freesound.org
A massive collaborative database of Creative Commons-licensed sounds. Use keywords like "UI pop," "motion whoosh," or "infographic" to find specific assets. Always check the specific CC license (some require attribution). 3. ZapSplat
ZapSplat offers thousands of free professional sound effects. They have a dedicated "Office" and "Technology" section which is perfect for explainer videos. They provide high-quality WAV and MP3 files. 4. YouTube Audio Library
Located inside the YouTube Studio, this library offers a "Sound Effects" tab. It’s a great place for "Pop," "Whoosh," and "Cartoon" sounds that are guaranteed to be safe for monetized content. Pro Tips for Using Your SFX Library
Once you’ve downloaded your library, follow these tips to ensure your audio sounds professional:
Layering is Key: Don't just use one sound. Layer a "Whoosh" with a "Mechanical Click" to create a unique transition that feels custom-made.
Watch the Volume: SFX should support the voiceover (VO), not fight it. Generally, keep your SFX 10-15dB lower than your primary narration.
Use High-Quality Formats: Always aim for WAV or AIFF files (24-bit/48kHz) when possible. MP3s are compressed and can lose the "crispness" needed for high-end digital explainers.
Match the Style: If your animation is "flat and modern," use clean, synthetic sounds. If your animation is hand-drawn or "stop-motion," look for organic, paper-ripping, or woody sounds. Conclusion
A high-quality explainer sound SFX library is a vital tool in any motion designer's arsenal. By utilizing free resources like ZapSplat or the YouTube Audio Library, you can elevate your production value without breaking the bank. Remember: the best sound design is often the kind the viewer doesn't consciously notice, but feels intuitively.
Finding the right sound effects (SFX) can transform a flat explainer video into an engaging experience. After reviewing the top free libraries available in 2026, here are the most effective sources for finding "Explainer" specific sounds like pops, whooshes, and interface clicks. Top Rated Free SFX Libraries for Explainer Videos
Pixabay: One of the most user-friendly libraries for explainer-specific sounds. It features a dedicated "Explainer" search category containing high-quality UI clicks, digital chirps, and accent sounds.
Mixkit: Highly recommended for its "no-attribution-needed" policy. It offers over 3,000 clips, including cinematic transitions and motion graphic accents that work perfectly for character-driven or corporate animations.
ZapSplat: A massive community favorite with over 63,000 free sounds. It is particularly strong for "interface" and "office" sounds, though standard free accounts may require attribution.
YouTube Audio Library: A staple for creators that provides reliable, copyright-free sound effects directly within YouTube Studio. Essential "explainer" staples like "pop," "rake whoosh," and "swoosh" are readily available here.
Uppbeat: Often cited as the best pick for modern creators, Uppbeat offers a curated selection of trending SFX designed to match high-energy, modern editing styles. Essential Sound Categories for Explainers
When downloading a library, look for these key categories to ensure your video feels professional:
UI/Interface: Clicks, taps, and notification "pings" for app or website demos.
Transitions: Whooshes, risers, and "swooshes" to guide the viewer’s eye during scene changes.
Accents: Pops and dings to highlight appearing text or icons.
Ambience: Subtle background "room tone" (like office or outdoor hums) to prevent the audio from sounding empty. Critical Considerations FREE Sound Effects Bundle (500+ FREE SFX Downlaod)
Enhance your visual storytelling with high-quality sound effects designed specifically for animations and presentations. Sound effects (SFX) are the secret ingredient that distinguishes professional storytelling from amateur projects, providing realism and keeping audiences engaged Essential SFX for Explainer Videos A standard explainer library typically includes: Interface & UI
: Clicks, taps, bubble pop-ups, and page turns for digital demonstrations. Motion & Movement
: Whooshes, swooshes, swirls, and "poofs" to emphasize transitions and graphic reveals. Foley & Organic
: Daily life sounds like typing, writing, paper crumpling, and door closings. Notifications
: Positive "dings" or success chimes and negative error buzzers to guide the viewer's emotional response. Where to Download Free Explainer SFX
Several reputable platforms offer high-quality, royalty-free sound effects for both personal and commercial use: Explainer Video SFX | Epic Stock Media | Samples Sound FX
Maya stared at the timeline on her monitor, the glowing green bars looking like the bars of a prison cell. It was 3:00 AM, and her deadline for the "Eco-Friendly Water Bottle" explainer video was in exactly five hours.
The animation was fluid. The vector art was vibrant. The voiceover was recorded and sounded professional. But the video felt like a ghost town. It was sterile. Lifeless.
She needed magic. She needed the pop, the whoosh, and the satisfying ding of comprehension. She needed the sonic layer that turned a series of moving pictures into a story.
She navigated to her usual subscription sound site and typed in "UI Positive." The results loaded. She clicked the first one: a pleasant chime. She checked the license. $4.99.
She clicked another. $7.00.
She opened a new tab and searched for "Cartoon Hop." $3.50.
Maya opened a fresh spreadsheet and started tallying. To properly populate her sixty-second video, she would need about twenty sound effects. At an average of five dollars a pop, she was looking at a hundred dollars out of her already meager freelance fee. She groaned, resting her forehead against the cool wood of her desk. She could render the video silent, but the client—a notoriously picky marketing agency—would reject it immediately.
Desperation makes for strange bedfellows, and in the world of video editing, that meant searching for the digital holy grail: the "Free Download."
She typed the query into the search bar, expecting the usual minefield of piracy sites, broken links, and "Complete this survey to unlock" scams. She was ready for the viruses and the low-quality rips.
Instead, the third result caught her eye. It was a forum post from three years ago, buried under layers of newer threads.
Subject: Explainer Sound SFX Library Free Download — The "Ghost" Pack
Maya clicked it. The post was short, written by a user named RenderGhost.
"I compiled this years ago. Royalty-free, recorded on vintage synths and foley stages. 500+ sounds. No catch. Just don't let the domain expire. Mirror link below."
Maya hovered over the link. Her antivirus gave it the green light. She clicked. "I compiled this years ago
The file was surprisingly small. ExplainerMaster_2000.zip. It downloaded in seconds.
She unzipped the folder. Unlike the messy, randomly named files she usually scavenged (like final_final_mix_v2_real.wav), these were pristine. The folders were labeled with surgical precision: _Transitions, _Impacts, _Nature_Loop, _UI_Elements.
She dragged the folder into her DAW (Digital Audio Workstation). The waveforms loaded, crisp and high-resolution.
She dragged the first file onto the timeline. It was labeled Eco_Reveal.wav.
It wasn't just a sound; it was a journey. It started with a low, resonant hum—like the earth shifting—and bloomed into a shimmering, crystalline sparkle that faded out into a warm, vinyl crackle. It fit the water bottle animation perfectly. It was elegant. It was $0.00.
She moved to the transitions. She found a folder simply named _Whoosh_Science.
She dropped a file called Velocity_Sweep.wav onto a section where the animation showed the water bottle flipping through the air. The sound ripped through the speakers—a distorted, airy rush that synced perfectly with the motion blur. It added weight and gravity to the digital object.
For the next two hours, Maya didn't just edit; she painted with sound.
When the graph showing "Plastic Reduction" spiked upward, she found a sound called Growth_Burst.wav. It wasn't a cheap electronic beep; it sounded like bamboo shooting out of the ground, mixed with a satisfying mechanical click.
When the recycling symbol spun, she used a file called Spin_Gold.wav. It had a metallic, precious quality that made the recycling process feel valuable rather than mundane.
The library was a treasure chest. There were silly mouth pop sounds for the bouncy text, deep cinematic booms for the company logo reveal, and subtle room tones that glued the disparate elements together. Every file was clean, normalized, and required no EQ tweaking.
At 5:30 AM, Maya sat back. The timeline was a lush forest of audio clips, color-coded and perfectly trimmed. She pressed play.
The video sang.
It wasn't just a sales pitch anymore; it was a miniature film. The sound design created an emotional arc—the tension of the problem, the rush of the solution, and the triumph of the result. The free library had given
If you're looking for an Explainer Sound SFX Library to download for free, you can find high-quality assets across several reputable platforms. These libraries are designed specifically for motion graphics and explainer videos, featuring "ui-style" clicks, pops, whooshes, and transitions. 🎧 Top Sources for Free Explainer SFX YouTube Audio Library
: A completely free, copyright-safe resource found directly in YouTube Studio
. It includes a dedicated section for sound effects like "beeps," "swishes," and "interface" sounds.
: One of the largest libraries available, offering over 100,000 professional-quality sound effects for free. It is highly recommended for finding specific, niche sounds like "cartoon accents" or "digital clicks" often used in explainers. Krotos Studio
: Offers free SFX packs that are often used for high-end cinematic and motion design work. You can explore their free offerings on the Krotos Studio Blog Freesound.org
: A massive collaborative database of Creative Commons licensed sounds. Use keywords like "UI," "pop," or "minimal transition" to find explainer-ready assets. Google Help 🛠️ Integrated Editor Libraries
If you prefer not to download files manually, several online editors have built-in libraries:
: Includes a categorized sidebar with "Magic," "Transition," and "UI" sounds specifically for video creators.
: Features a searchable database of thousands of popular royalty-free sound effects that you can drag directly into your project. 💡 Pro Tip for Explainer Videos When searching for "Explainer" sounds, focus on UI (User Interface) sounds and Transitions . Look for: Pops/Bubbles : For icons appearing on screen. Whooshes/Swishes : For moving text or sliding graphics. Muted Clicks : For highlighting specific buttons or data points. for a standard motion graphics project?
Use music and sound effects from the Audio Library - YouTube Help
Finding the right audio to match your motion graphics shouldn't feel like a chore. The Explainer Sound SFX Library is a curated collection designed specifically to breathe life into 2D animations, UI transitions, and corporate presentations. Why This Library is a Game-Changer
Explainer videos rely on "mickey-mousing"—the technique of syncing sound perfectly with on-screen actions. This library provides the essential toolkit for that precision:
Whistles & Whooshes: Perfect for sliding text or fast-moving icons.
Pops & Clicks: Ideal for button presses, notification bubbles, and data reveals.
Digital Beeps: Great for tech-focused tutorials or "loading" sequences.
Acoustic Accents: Woodblocks and subtle bells that add a friendly, human touch to your brand story. High-Quality, Zero Cost
Most high-end SFX packs come with a hefty price tag, but these free downloads offer professional-grade, high-fidelity (WAV/MP3) files without the financial hurdle. Whether you’re a freelance animator or a content creator on YouTube, having these sounds in your DAW allows you to emphasize key points and keep your audience engaged. Pro Tip for Usage
Don't just drop a sound in; layer it. Combining a soft "whoosh" with a light "pop" at the end of a transition makes the animation feel grounded and satisfyingly tactile.
Jax was a "vibes" architect—or, as his landlord called him, a struggling sound designer. He had a deadline for a high-tech corporate explainer video that was due at midnight, and his project felt like a desert: dry, silent, and completely devoid of life.
"The cloud-based infrastructure," the narrator droned in the raw edit.
Jax winced. It needed texture. It needed that "expensive" feeling you only get when every motion on screen has a sonic heartbeat. He spent an hour digging through his hard drives, but everything he had was too "cinematic"—explosions and dragon roars didn't exactly scream efficient data management.
Then, he found it. Tucked away on a minimalist creator forum was a thread titled:
[RELEASE] The 'Clear & Crisp' Explainer SFX Library – Free CC0.
He clicked download, and it felt like opening a toolkit of polished glass. He started with the
. Every time a data point bubbled up on screen, Jax added a soft, rounded
. It wasn't distracting; it was satisfying, like bubble wrap for the ears. Next came the Paper Slides
. As the infographic "pages" turned, he layered in organic, high-frequency swishes. Suddenly, the digital animation felt tactile, like a physical book unfolding in front of the viewer. The centerpiece was the Digital Risers
. For the big reveal of the company logo, Jax didn't use a generic cymbal crash. Instead, he chose a shimmering, synthesized swell that built tension and ended in a perfect, muted He hit play.
The video transformed. The visuals weren't just moving anymore; they were Maya hovered over the link
. The "cloud-based infrastructure" now hummed with a friendly, low-end drone that made the technology feel safe and reliable.
Jax hit 'Send' with ten minutes to spare. A week later, the client emailed back:
"We don't know why, but this feels smarter than our last video. It just... clicks."
Jax looked at the "Explainer Library" folder on his desktop and smiled. He knew exactly why it clicked. where to find high-quality free sound libraries for your own projects?
The Unseen Narrator: Why Sound Effects Are the Soul of Explainer Videos
In the world of digital marketing and education, the "explainer video" has become the gold standard for simplifying complex ideas. While much of the focus naturally falls on vibrant animations and crisp voice-overs, there is an "unsung hero" that often distinguishes a professional production from an amateur one: the sound effect (SFX). Sound design isn't just an accessory; it is a critical storytelling tool that influences the pacing, mood, and emotional resonance of a film. The Psychology of Sound in Explainer Content
Sound effects serve several vital functions beyond simply mimicking reality. In an explainer video, targeted audio cues like a subtle "click" or "whoosh" can direct a viewer’s attention to specific visual elements, helping them grasp information more quickly. Because sound design can trigger emotions—such as suspense with a low drone or joy with a playful "bounce"—it helps forge an emotional connection that anchors information in a viewer's memory. Studies even suggest that videos with appropriate music and sound effects can achieve up to 80% more engagement than those without. Where to Find Free Explainer Sound SFX
For creators on a budget, building a high-quality audio library doesn't have to be expensive. Several platforms offer extensive libraries of free-to-download sound effects specifically suited for animations and motion design: Epidemic Sound
Let us walk through a typical 30-second software explainer video. Here is how you would apply your free downloads:
Scene 1: The Problem (0:00 – 0:10)
Scene 2: The Solution (0:10 – 0:15)
Scene 3: The Action (0:15 – 0:25)
Scene 4: Success (0:25 – 0:30)
An SFX (sound effects) library is a curated collection of short audio clips used to enhance multimedia projects: videos, podcasts, games, apps, animations, and presentations. A free downloadable SFX library aimed at “explainer” content focuses on sounds that help clarify, emphasize, and polish instructional or marketing videos. Below is a concise guide to what such a library typically includes, why it’s useful, how to use it, and practical legal/technical considerations.
If you’d like, I can:
Which option do you prefer?
(Invoking related search terms.)
Boost Your Motion Graphics: The Ultimate Explainer Sound SFX Library
Creating a professional explainer video isn't just about the visuals. The difference between a "good" video and a "great" one often lies in the sound design. If you've been looking for that perfect pop, whoosh, or UI click to make your animations come alive, we’ve got you covered. Why Sound Design Matters for Explainers
Explainer videos rely on clarity and engagement. High-quality sound effects (SFX) serve several critical functions:
Emphasis: A subtle "ding" can highlight a key statistic or feature.
Pacing: "Whooshes" and "swipes" help guide the viewer through transitions, keeping the energy high.
Tactile Feel: Adding "clicks" or "bubbles" to UI elements makes the digital experience feel more tangible and responsive. What’s Inside the Explainer Sound SFX Library?
This curated library is designed specifically for motion designers and video editors who need clean, modern sounds that don't distract from the narration. MATESFX highlights a massive collection of assets including:
Movement Sounds: Smooth transitions, pops, accents, and morphs. UI Elements: Clicks, buttons, and digital alerts. Accents: Sparkles, gleams, and whistles to add character.
Real-Life Textures: Tools, bicycles, horns, and atmospheric background noise. Where to Find More Free SFX
If you need to supplement your library, several top-tier platforms offer royalty-free sounds perfect for creators:
YouTube Audio Library: A vast, copyright-safe database located directly in YouTube Studio.
Uppbeat: Highly curated sounds specifically tailored for YouTubers and modern content creators.
BBC Sound Effects: Incredible for high-quality ambiance and nature sounds.
Freesound.org: A massive collaborative database for finding unique, community-generated sounds. Pro Tip: Layer Your Sounds
Don't just use one effect. Try layering a "whoosh" with a "pop" at the end of a transition to give it more weight. Most professionals also lower the volume of SFX so they sit just below the voiceover, ensuring they support the message rather than competing with it.
Ready to level up your next project? Download your toolkit and start making some noise! Explainer Sound SFX library - Free Download - MATESFX
MATE SFX (Explainer Sound SFX Library): This specific pack is often featured on asset-sharing sites like FreeVideoEffect. It includes real-life sounds such as tools, bells, ticks, and atmospheres tailored for explainer videos.
YouTube Audio Library: A reliable, built-in resource within YouTube Studio that provides thousands of copyright-safe sound effects specifically categorized for creators.
Zapsplat: This site is highly recommended for creators needing specific professional-quality recordings; it hosts over 100,000 free sound effects across almost every category.
FreeSound: A massive collaborative database of Creative Commons Licensed sounds, allowing you to find unique, community-contributed audio for any project. Generating Custom SFX
If you can't find the exact "paper" or "explainer" sound you need, you can use AI tools like Adobe Firefly to generate sound effects from text prompts or vocal imitations (e.g., mimicking a "swish" or "pop" sound).
The word "free" is tricky. Many sites offer free downloads but restrict usage to personal projects only. For explainer videos (often used to sell products or services), you must have a commercial license. Look for Creative Commons Zero (CC0) or clearly labeled "Royalty-Free for Commercial Use."
Before we dive into the download links, let us understand the psychology of sound. Explainer videos typically last between 60 and 90 seconds. In that short window, you must grab attention, explain a problem, present a solution, and issue a call to action.
Sound effects bridge the gap between seeing and feeling:
Without these elements, viewers perceive the video as "cheap" or "amateurish," regardless of your animation quality.
After analyzing dozens of audio repositories, we have curated the five best resources for legal, high-quality explainer SFX.