TuneLab
Song Mashup Maker
Combine vocals from one song with the instrumental of another. Runs on your device — files never uploaded.
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Song A — Vocals
The song whose vocals you want to keep
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Song B — Instrumental
The song whose beat/music you want to use
MP3, WAV, FLAC, OGG, M4A · Max 10 minutes per song
Private — processed on your device, never uploaded
First use downloads a 67 MB AI model (cached for future visits).
Creating Your Mashup...
Song A
Separating stems...
Detecting BPM...
Song B
Separating stems...
Detecting BPM...
Overall
Step 1 of 5
DecodedSplittingBPMKeyStretch
Processing locally
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Rendering...
How to Make a Mashup
- 1 Upload two songs — Song A provides vocals, Song B provides the beat
- 2 AI separates stems and syncs tempos automatically
- 3 Adjust faders to blend, then download your mashup as WAV
Frequently Asked Questions
How does the mashup maker work?
Upload two songs. AI separates vocals and instrumentals from both, detects BPMs, syncs tempos automatically, then lets you mix vocals from one song over the beat of another with live faders.
Is my audio uploaded to a server?
No. All processing runs directly on your device using your own GPU or CPU. Your files never leave your machine — not even temporarily.
What if the two songs have very different tempos?
The tool auto-detects if half-time or double-time matching works better. For large BPM gaps, you can choose to stretch anyway or set a custom target tempo.
