How to Make Slowed + Reverb Songs
You can make a slowed and reverb edit of any song in a minute or two with the free Slowed + Reverb tool — no software to install and no account. Drop in a track you already have, pull the speed down to around 85–90%, add a reverb tail, preview it live, and export a WAV or MP3. It all runs in your browser, so your audio never leaves your device.
What you'll need
Just a song file that's already on your device — MP3, WAV, FLAC, or M4A all work. That's it. There's nothing to sign up for, nothing to upload to a server, and no URL to paste. If you have the audio, you have everything you need. (If the track is one you don't own, read the note on copyright and fair use before you post the edit anywhere.)
What does slowed and reverb mean?
Slowed and reverb is an edit that slows a song down and drenches it in reverb to give it a dreamy, nostalgic, underwater feel. It spread across TikTok and SoundCloud as a whole style of fan edits, but the recipe is simple.
Two things are happening at once. First, the tempo drops — the track plays back slower than the original. Second, because the tool lowers the playback rate, the pitch drops with it, and that slightly detuned, sinking quality is the slowed sound. It's the same reason a record played at the wrong speed sounds lower and heavier. If you want the full picture of why one drags the other down, see how pitch, speed, and duration relate.
On top of that, reverb adds a spacious tail — the sense that the song is playing in a big, echoey room. Blend those two together and you get the signature slowed and reverb wash: slow, low, and cavernous. The history and the pitch math behind the style are in What Is Slowed and Reverb?.
How to make a slowed and reverb song
The whole thing is three sliders and a play button. Here's the order I'd work in.
Open the Slowed + Reverb tool and drop your file in. The moment a track loads, you're ready to shape it — there's no AI model to download and no processing wait, so the preview responds immediately.
Set the Speed slider to around 85–90%. It defaults to 85%, which is a good starting point. That light slow is where most modern edits live: slow enough to feel heavy, not so slow it turns to mud. The slider only goes down to 70% on purpose — that's already quite extreme.
Set Reverb mix to around 30–40%. The default is 35%. This controls how wet the track sounds. Thirty-five percent gives you an obvious, dreamy tail while leaving the song intact underneath.
Set Reverb length to around 2–3 seconds. The default 2.5s is a natural room. Longer tails (toward 5s) sound like a cathedral and start to smear everything together; shorter ones (toward 1s) are tighter and cleaner.
Press Play to preview. The mix plays live, and — this is the useful part — you can drag any slider while it's playing and hear the change in real time. Nudge the speed down another couple of percent, push the reverb up a touch, and listen. Trust your ears over the numbers.
Export. Pick a format — WAV is the default and lossless, or choose MP3 for a smaller, share-ready file — and hit Export. It renders and downloads a file named like
slowed_yoursong.wav. If you're posting to a platform that wants a compact upload, MP3 is the safe pick; here's what an MP3 file actually is if you're deciding.
Want to start over with a different track or different settings? Hit Reset File and drop in a new one.
Getting the vibe right
The mistake almost everyone makes at first is overdoing it. More slow and more reverb feels like more vibe, right up until the track collapses into sludge.
If the low end turns to mush, you've either slowed too far or drowned it in reverb. Pull the speed back up toward 88–90% and drop the reverb mix under 40%. A slowed and reverb edit should still groove — you want to feel the beat, not wade through it.
If the vocal loses its words, that's reverb length doing it. A long tail smears each syllable into the next one. Shorten the reverb length to 2 seconds or so and the lyrics come back into focus while the track still sounds spacious.
When in doubt, keep it subtle. The best edits are often only slightly slowed. A song at 90% with a modest reverb sounds intentional and lush; the same song at 72% with maxed reverb sounds broken. You can always slow it more — but do it a little at a time and keep pressing Play.
One more honest note: because the tool drops pitch along with speed, a track that's already low or bass-heavy can get boomy fast. Those are exactly the ones to keep on the gentle side.
Related tools and guides
- Want the opposite direction — sped-up, brighter, nightcore-style? Use the Speed Changer to raise the tempo instead.
- Need to change pitch without changing speed (or the other way around)? The Pitch Changer keeps the two independent.
- Another dreamy edit worth trying on the same song: how to make 8D audio, the effect that pans around your head in headphones.
- Ready to post the finished edit? Here's how to trim audio for Instagram and TikTok so the clip fits.
Frequently asked questions
Is this slowed and reverb maker free?
Yes, completely free. There's no account, no sign-up, and no watermark on your export. The tool runs entirely in your browser using your device's own audio processing, so there's no paid tier gating the good settings. Make as many edits as you want.
Does making a slowed and reverb song lower the pitch too?
Yes, and that's intentional. Slowing the track drops its playback rate, and pitch falls along with speed — that slightly detuned, sinking quality is the core of the slowed sound. If you specifically want to change tempo without touching pitch, use the Speed Changer instead, which preserves pitch while it slows the track.
Do I have to upload my song to a server?
No. The tool works on a file you already have on your device, and the audio never leaves your browser — nothing is sent to a server to be processed. That means it's private and it works on whatever file you drop in. You can't, however, paste a streaming link; you need the actual audio file first.
What settings give the best slowed and reverb sound?
A good default is speed around 85–90%, reverb mix around 30–40%, and reverb length around 2–3 seconds. That's slow and dreamy without turning muddy. Preview with the Play button and adjust while it's playing. If the low end gets sludgy or the vocal loses its words, ease the speed back up and shorten the reverb.
Can I export a slowed and reverb MP3?
Yes. In the export section, choose MP3 instead of the default WAV, then hit Export. WAV is lossless and larger; MP3 is smaller and easier to upload to most platforms. Both are made right in your browser, and the file downloads with a slowed_ prefix so it's easy to find.