How to Make Slowed and Reverb Songs (Best Settings)

To make a slowed and reverb song, open the free Slowed + Reverb Maker, drop in a song from your device, choose the Slowed preset (0.80× speed, 35% reverb, a 3.5-second room) and press Play. Adjust the sliders while it plays until it feels right, then download it as MP3 or WAV.

Everything happens in your browser: the song is never uploaded, and you can listen to every change for free before you decide to download.

What actually makes a song sound "slowed and reverb"?

Two simple changes create the whole style.

Slowing the song lowers the pitch. The tool changes speed the classic way, like playing a record a bit too slow. The sound waves stretch out, so voices get deeper and instruments sound heavier. At 0.80× the pitch drops by almost four semitones, which is why slowed edits feel so different from the original even though nothing else changed.

Reverb puts the song in a big empty room. Reverb is the long, soft echo you hear in a hall or a cathedral. Each note keeps ringing after it ends and blends into the next one. Mixed with the lower, slower music, that creates the dreamy, nostalgic, late-night feeling the style is known for.

Some edits add a third ingredient: a "muffled" low-pass filter that removes the brightest frequencies, so the song sounds like it's playing in the next room or underwater.

Which settings should I start with?

These combinations cover most of what you hear online. Load the preset closest to the mood you want, then fine-tune.

Vibe	Speed	Reverb	Room size	Extras
Classic slowed	0.80×	35%	3.5 s	None
Slightly slowed (natural vocals)	0.88×	25%	2.5 s	None
Deep and sad	0.72×	50%	5 s	Muffled 20–25%, bass +2–3 dB
Dreamy and distant	0.78×	60%	6–7 s	Muffled 35%
Slowed for sleep or study	0.75×	45%	5 s	Volume 80%

The "Slowed + deep" preset in the tool is the third row: 0.70× speed, 50% reverb, a 5-second room, a little muffle and a small bass lift.

How do I make a slowed edit step by step?

1. Add the song. Open the Slowed + Reverb Maker and drop an MP3, WAV, M4A, AAC, OGG or FLAC file up to 15 minutes long. Higher-quality files (320 kbps MP3 or WAV) hold up better when slowed.
2. Choose a preset. Click Slowed or Slowed + deep.
3. Press Play and listen. The effects run live, so every slider change is heard immediately. The time display shows the new, longer length of the song.
4. Fine-tune. Move Speed first, then Reverb, then Room size. Change one thing at a time and listen for a few seconds before moving on.
5. Download. Pick MP3 for sharing or WAV if you'll edit it further, then press Download. Listening is free; the download uses a monthly plan or a 24-hour pass.

How do I keep the mix clean instead of muddy?

Slowed edits go wrong in predictable ways. A few habits prevent most of them:

• Don't stack too much low end. Slowing a song already shifts it lower. Long reverb adds even more low rumble. If the result sounds boomy, lower Reverb by 5–10% or reduce Room size before reaching for anything else.
• Use bass boost lightly. +2 to +3 dB is usually enough. For more, try the Bass Booster on its own and compare.
• Keep words understandable. If you can't follow the lyrics any more, the reverb is too wet. Vocals are what people remember.
• Watch the volume. The tool has a built-in limiter that catches peaks, but if the sound starts to "pump", lower the Volume slider to 85–90%.
• Start from a good file. Compression artefacts in a low-quality MP3 become more audible when slowed and drenched in reverb.

Should I combine slowed with other effects?

Yes, and the tool lets you mix them freely. Two popular combinations:

• Slowed + 8D. Tick 8D audio to make the slowed song circle slowly around your head. It's best on headphones; read what 8D audio is for the settings that feel smooth rather than dizzy.
• Slowed + muffled. A 20–35% muffle gives the "song playing in another room" effect that suits late-night edits.

If you want the opposite energy, the Nightcore Maker speeds songs up instead; see how to make nightcore songs.

Can I make a slowed mashup?

You can. The Song Mashup Maker combines parts of two to four songs with crossfades or layers, and has a "Make it Slowed + Reverb" switch that applies the classic preset to the whole mashup. The guide on how to make a song mashup explains tempo matching and crossfades.

What about copyright?

Changing the speed and adding reverb doesn't change who owns the recording. Slowed edits of popular songs are fine for your own listening, but publishing them on TikTok, Instagram, YouTube or streaming services needs permission from the rights holders, or a platform licence that covers it. When in doubt, use your own music or royalty-free tracks, and read each platform's music rules before posting.

Quick checklist

• Start at 0.80× speed, 35% reverb, a 3.5-second room.
• Change one slider at a time while the song plays.
• If it's muddy, reduce reverb or room size before anything else.
• Keep vocals understandable.
• Download as MP3 for sharing, WAV for further editing.

Ready to try it? Open the Slowed + Reverb Maker and listen to your first edit in under a minute.