Make Slowed + Reverb Song Version

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This tool does both parts of the slowed + reverb sound at once: it lowers the tempo so the track feels heavier and slower, then layers reverb on top so vocals and instruments sound like they're playing in a large room. You work on the waveform and hear both changes together, so you can balance them by ear instead of guessing.

To start, upload an audio file (MP3 or WAV). Lower the speed first, usually somewhere around 70 to 85 percent of the original, then add reverb and adjust how wet and roomy it sounds. Play it back, nudge the two settings until it sits right, and export.

Set the speed before the reverb, not after. Reverb tails get longer as you slow a track down, so an amount that sounded subtle at full speed can turn into a wash once the tempo drops. Get the speed where you want it, then dial in the reverb against that slower playback.

People mostly use this to turn a pop or hip-hop track into the slowed + reverb edit you hear on TikTok and YouTube, or to make a calmer, late-night version of a song to play while studying or winding down.

It's free, works right in your browser, and there's nothing to install or sign up for. The same studio also handles bass boost, 8D/spatial audio, and plain speed or tempo changes if you want to keep editing.