How to Make Slowed and Reverb Edits

The magic isn't just 'play it slower.' The defining characteristic is tape-style slowdown: when you slow the track down, the pitch drops with it, exactly like a tape or record played at a lower speed. Vocals get deeper, the whole song sinks, and it feels heavier and more intimate. Typical slowed edits sit around 0.75×–0.85× of the original speed.

The second half is a large hall or plate reverb — a long, spacious echo that fills the gaps opened up by the slower tempo. Slowing a song leaves more air between the sounds; reverb pours into that space and creates the dreamy, distant, 'in a huge empty room' atmosphere. Slowdown plus big reverb: that's the entire recipe.

The roots go back to 'chopped and screwed,' a technique pioneered by DJ Screw in the Houston hip-hop scene of the 1990s: slowing records down to a syrupy crawl and chopping in rewinds and skips. It was a whole regional aesthetic long before the internet.

The modern 'slowed + reverb' revival is its streaming-era descendant. Around the late 2010s, edits of popular songs — slowed down and drenched in reverb — began racking up huge view counts on YouTube, then exploded on TikTok. The formula stripped chopped-and-screwed down to its two most accessible moves, which is why anyone can now make a convincing one in minutes.

Almost everything about the feel of a slowed + reverb edit comes down to two dials. Understanding what each one does lets you dial in a mood rather than guess:

• Speed depth — how far you slow it down. Subtle (around 0.85×) keeps the song recognizable and just adds weight and mood. Deeper (around 0.75× or lower) gets heavy, hazy, and dramatic, but push too far and vocals turn muddy and sluggish. Most edits live in the 0.75×–0.85× window for a reason.
• Reverb size and mix — how big the space feels and how much of it you hear. A larger room/decay makes it more cavernous and distant; the wet/dry mix sets how drenched it is. Around 20–35% wet is a common sweet spot: audible atmosphere without washing the song into mush. Too much reverb and the lyrics smear together.

Any DAW can do this — GarageBand, Audacity, FL Studio, Ableton, Logic, Reaper. The critical detail is making sure pitch follows speed, which often means turning OFF the feature the software enables by default:

1. 1

   Disable time-stretch / warp

   Modern DAWs default to preserving pitch when you change tempo — the opposite of what you want. Turn off warp/elastic-audio/time-stretch on the clip so that slowing it also lowers the pitch, tape-style. In Audacity, use the 'Change Speed' effect (which moves pitch with tempo), not 'Change Tempo' (which preserves pitch).

2. 2

   Slow it to about 0.8×

   Set the playback speed to roughly 80% of the original as a starting point, then taste from there toward 0.75× for heavier or 0.85× for subtler.

3. 3

   Add a hall or plate reverb, around 30% wet

   Put a reverb on the track, choose a large hall or plate preset with a long decay, and set the wet/dry mix around 25–35%. Trust your ears — pull it back if the vocals start to smear.

4. 4

   Export

   Bounce to MP3 for sharing or WAV if you want lossless quality to work with further.

If you don't want to wrangle a DAW, FileMorf's slowed + reverb tool applies the whole effect as a preset — no warp settings to remember, no reverb to route. And because it runs entirely in your browser, the song never uploads to a server; the whole edit happens on your own machine.

1. 1

   Add your track

   Drop your audio into the tool. Processing happens locally in the browser, so the file stays on your device.

2. 2

   Apply the slowed + reverb preset

   One click applies the signature combination — 0.8× tape-style slowdown plus a hall reverb. Both are adjustable, so you can push the speed deeper or dial the reverb up or down to taste.

3. 3

   Preview and export

   Listen back, tweak the two dials until the mood is right, and export to MP3 or WAV.

The same tape-speed idea run the other way gives you nightcore — the effect's energetic mirror image. Instead of slowing down, you speed the track up to around 1.25×, which raises the pitch, making vocals higher and brighter and the whole song faster and more hyper.

Mechanically it's identical: pitch moves with speed (no time-stretch), just upward instead of down, and usually with little or no added reverb. If a tool can slow a song tape-style, it can speed it up the same way — the only difference is which side of 1.0× you land on.

Making a slowed + reverb edit for your own private listening is fine. Posting one publicly is a different matter, and it's worth being clear-eyed about it.

• A slowed + reverb version of a copyrighted song is a derivative work. Publishing it — on YouTube, TikTok, Spotify, anywhere — legally requires permission from the rights holders (the label and publisher), even though you didn't write the song.
• Platforms actively detect these edits. Content-ID and similar systems recognize slowed and pitched versions of copyrighted recordings, not just exact copies. The usual result is the video being claimed, muted, blocked, or monetized on the rights holder's behalf — sometimes a strike.
• 'It's transformative' is not a reliable shield. Slowing and adding reverb is generally not enough to count as fair use, and fair use is a defense decided case by case, not a blanket permission.