How to Remove Vocals & Make a Karaoke Track (On-Device)

A finished song looks like one waveform, but it’s really four: the vocals, the drums, the bass, and everything else. ExpoCut can separate them on your phone — no studio, no upload — which unlocks karaoke tracks, clean voice isolation, remixes, and beat-perfect cuts.

What “stems” are (and why they’re powerful)

A stem is one isolated part of a mix. Once a song is split into stems you can turn each one up, down, or off independently. That single capability covers a surprising amount:

• Karaoke / instrumental — mute the vocals.
• Acapella — keep only the vocals.
• Clean dialogue — isolate a voice out of noisy background audio.
• Remix — rebalance the parts, or swap the music bed while keeping the original drums.
• Beat-synced editing — use the isolated drums to find exact beats to cut on.

Step 1 — Separate the track

1. Add the song or audio clip

   Drop your music or recording onto an audio track.

2. Select it and choose Separate

   ExpoCut analyzes the audio and splits it into vocals, drums, bass and other — entirely on-device.

3. Pick your quality

   A fast mode gives a near-instant split for quick jobs; a studio mode takes a little longer and returns cleaner stems when the result matters.

Fast or Studio quality Separate stems

Each part on its own track — mute or solo

Step 2 — Make a karaoke (or acapella) track

Vocals muted Instrumental plays on

This is the headline trick:

• Karaoke / instrumental: mute the vocals stem. The drums, bass and instruments keep playing — sing over the top, or use it as a clean backing bed for a voiceover.
• Acapella: mute everything except vocals for an isolated vocal you can drop over new production.

Step 3 — Rebalance, isolate, or swap

Once you have stems, the mix is yours:

Goal	Move
Push the energy	Raise the drums stem, ease the bass
Clean up dialogue	Isolate voice to pull speech out of background noise
New backing, same groove	Swap the music but keep the original drums
Duck under narration	Lower the music stems automatically under your voice

Step 4 — Cut to the beat

Because the drums are now isolated, the app can find the beats precisely — so you can snap your cuts (and speed ramps or transitions) to them. Beat-matched edits are the single biggest “this looks pro” upgrade for music-driven video.

Where to go next

• Build the rest of your audio: add music & audio the right way.
• Snap the picture to the groove: slow motion & speed ramps.
• Put a voice on top: text-to-speech voiceover.

One song, four stems, endless options — and all of it happens on your phone, with nothing uploaded.

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Frequently asked questions

How do I remove the vocals from a song?

Add the track, select it, and choose Separate. ExpoCut splits the audio into vocals, drums, bass and other stems on-device. Mute the vocals stem and you've got an instrumental/karaoke version; keep only vocals for an acapella. No upload — the whole separation runs on the phone.

Is the stem separation done in the cloud?

No. Separation runs on-device, so it works offline and your audio never leaves the phone. A faster mode gives a quick split for instant results, and a higher-quality mode produces cleaner stems when you want them.

What can I do with the separated stems?

Mute vocals for karaoke, isolate the voice for a clean dialogue/acapella, rebalance the mix (push the drums, drop the bass), swap in a new music bed while keeping the original drums, or cut your edit to the detected beats.