How to make a nightcore or sped-up song on your phone

Reverse Audio is best known for flipping sound backwards, but the same Custom controls do something else people love: nightcore and sped-up edits. Both come down to two dials, speed and pitch. Here is how to make one on your phone in a couple of taps.

What is nightcore?

Nightcore is a track sped up and pitched up at the same time, which gives it that fast, bright, high-energy sound. A plain "sped up" edit just plays faster; nightcore also lifts the pitch so the vocals sit higher. You can make either by adjusting how much you move each dial.

Make a nightcore or sped-up song

With Reverse Audio (on iOS and Android):

• 1. Import the song. Bring in an MP3, WAV, M4A, AAC, FLAC or OGG file.
• 2. Open Custom. Custom mode gives you the speed and pitch controls.
• 3. Dial it in. For nightcore, raise the speed and the pitch together (try a faster tempo with the pitch a few steps up). For a plain sped-up edit, raise the speed only.
• 4. Save or share. Export the result and drop it into a video or send it on.

Everything runs on your device, no upload required. And because this is Reverse Audio, you can reverse the track or stack a voice effect on top for something stranger.

Sped up vs nightcore vs slowed

• Sped up: faster tempo, same-ish pitch. Punchy edits for short videos.
• Nightcore: faster tempo plus higher pitch. Bright and energetic.
• Slowed: the opposite, lower the speed (and pitch) for a dreamy, heavy feel.

Want to flip a track instead? See how to play any song backwards, or reverse a single MP3.