How to Make a Slowed + Reverb Edit (Free, in Your Browser)
Updated 2026-07-05
Slowed + reverb is that hazy, underwater remix style that took over YouTube and TikTok: the song plays slower, the pitch drops with it, and a long reverb tail fills the space. It sounds like a mood because it is one. Here is exactly how to make your own.
The recipe
- Speed: 0.75x to 0.85x. The classic zone. Slower than 0.75x starts to smear; 0.8x is the sweet spot most edits use.
- Let the pitch drop. The deep, dragged-down vocal is the signature of the genre. It comes free with the slowdown, so leave pitch correction off.
- Reverb: 30% to 50%. Enough to feel like a big empty room, not so much that the drums disappear.
- A touch of bass boost if the slowdown thinned the low end out.
Make one in about a minute
Open the free Slowed + Reverb studio, drop in an audio file, and hit the Slowed + Reverb preset. Everything runs in your browser, so nothing gets uploaded. Fine-tune the sliders while it plays, then export as MP3 or WAV when it sounds right.
Nightcore is the same trick, reversed
Speed up instead: around 1.2x to 1.3x, no reverb, pitch riding up with the tempo. The studio has a Nightcore preset for exactly this.
Two things worth knowing
First, start from the highest quality file you have. Slowing audio down stretches every flaw, so a crunchy 128 kbps rip gets crunchier. Second, if you plan to post your edit anywhere, remember the original song belongs to its rights holders. Editing a track for yourself is one thing; publishing it is a licensing question. The copyright page covers where TuneBad stands.
Bonus: match the tempo to your project
Making an edit to rap or sing over? Check the slowed tempo with the Key & BPM Finder: analyze your exported file and you get the new BPM and key, ready for your DAW session. If you only need part of the song, trim it first with the MP3 cutter.
Related: How to find the key and BPM of any song · What is LUFS?