How to make a karaoke track from a song

Compare the original and instrumental

Listen to the same 24-second passage. Check for remaining vocals and missing instruments.

These examples come from an Android emulator and an iOS simulator. They demonstrate one recording; sound quality and processing time vary with the recording and device.

Before you start

The first split downloads a model: about 305 MB on Android, or 233 MB on iPhone and iPad. Allow internet access and free storage for setup. Later splits work offline with the cached model.

Separate recordings up to 2 hours, or choose a shorter section from a longer file. Keep the app open while processing; going to the background cancels the operation. Long recordings need substantial free storage. The app shows a storage estimate before starting.

Create and save a backing track

1. Import a WAV, M4A or MP3 file, or tap "Try the 12-second sample".
2. Open "Split vocals & instruments". Choose a section, or tap "Use whole recording" for a file up to 2 hours.
3. The first split downloads a model: about 305 MB on Android, or 233 MB on iPhone and iPad. Allow internet access and free storage for setup. Later splits work offline with the cached model.
4. Start separation and keep the app open until the result is ready.
5. Choose "Instrumental" for the music without the vocal part. Listen or export a WAV. Choose Vocals, Drums, Bass or Other for an isolated part.
6. Save or share the instrumental WAV. Open the saved file outside the app to check it.

Speed, key and export

Tap "Edit this stem" and select a section to change speed, pitch or repeats. Tap "Play passage", then "Export" to keep the adjusted WAV.

Speed ranges from 0.25× to 2×, and pitch from −12 to +12 semitones. A/B markers select a section up to 10 minutes for these edits. Export saves the prepared WAV, up to 1 hour including repeats; use Save to Files or another destination in the share sheet.

Karaoke maker questions

Is the karaoke maker free?

All current tools and WAV exports are free, with no account, ads or subscription.

Does it show lyrics or record my singing?

The app creates and edits backing-track audio from your own files. It does not include synced lyrics, a song catalogue or singing recording, and it does not download songs from streaming services.

Can I remove vocals offline?

Yes, after a one-time separation model download: about 305 MB on Android or 233 MB on iPhone and iPad. Keep the app open while processing. Separation can leave some vocal or instrument leakage.

Audio source and credit

A 24-second vocal and guitar remix. The instrumental examples are unmodified app exports.

Free (let the dolphins go) · CC BY 3.0

Starfish Stories :: The Band - StarfishStories.wordpress.com. Composition: Adrian Loo; lyrics/vocals: I-Ling Chia; arrangement/mix: Ivan Chew.