Beat Cafe splits any song into clean stems - vocals and instrumental - entirely on your Mac. No upload, no account to run it, no sketchy website holding your audio.
Stem separation is the classic task people hand to a random online site that quietly uploads their tracks to a server. Beat Cafe runs the model on-device: after a one-time download, your audio never leaves the machine.
Highlights
- Vocals and instrumental - drop a track and get back separate, clean stems as standard WAV files.
- 100% offline - the only network use is the first model download. Separation makes no network calls, ever.
- GPU-accelerated - uses Apple CoreML (Neural Engine / GPU) with automatic CPU fallback. About 4x realtime on Apple Silicon.
- Live progress and cancel - per-stage progress with an ETA, and a cancel button any time.
- Built-in A/B players - preview each stem inline without leaving the app.
- History - every separation is remembered; replay or reveal past stems in a click.
- Wide format support - mp3, wav, flac, m4a, aac, ogg, aiff in; 16-bit WAV out.
How it works
Drag a song onto the window (or click to choose one), pick which stems you want and where to save them, then hit Separate. Beat Cafe decodes the audio, runs it through the separation model in overlapping segments, and writes each stem to your chosen folder. Play them in the built-in A/B players, or reveal them in Finder. Past runs live in History; data stays in ~/Library/Application Support/Beat Cafe/.
Perfect for
- Karaoke - keep the instrumental and sing over it.
- Remixers and producers - pull an a cappella or a clean backing track to sample and rework.
- Musicians and transcribers - isolate a part to learn or notate it by ear.
- Anyone with private tracks - unreleased or client work that must not be uploaded anywhere.
