StemLab

Practice any song,
one stem at a time

StemLab separates songs into individual stems — drums, bass, vocals, guitar, piano — with real-time tempo and pitch control. All processing happens on your Mac, completely offline.

Download for Mac

Requires Apple Silicon Mac running macOS 13 Ventura or later

Everything you need to practice smarter

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Stem Separation

StemLab splits any song into six stems: drums, bass, vocals, guitar, piano, and other instruments.

Tempo Control

Slow down difficult passages or speed up for a challenge. Real-time time-stretching that keeps audio sounding natural.

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Pitch Shifting

Transpose any song up or down by semitones to match your instrument or vocal range, without affecting tempo.

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Solo & Mute

Isolate any combination of stems. Mute the vocals to sing along, or solo the bass line to learn it note by note.

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Completely Offline

All processing runs locally on your Mac. Your music never leaves your computer. No internet required.

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Export & Share

Export individual stems or custom mixes as high-quality audio files. Perfect for creating backing tracks.

How it works

1

Drop in a song

Import any audio file — MP3, WAV, FLAC, AAC, and more. StemLab handles the rest.

2

AI separates the stems

StemLab splits your song into six individual stems in under a minute. No internet connection needed.

3

Practice with control

Solo, mute, adjust volume, change tempo, shift pitch — all in real time. Focus on exactly what you want to learn.