stemdeckapp/stemdeck

What it solves

StemDeck addresses the need for a private, local, and subscription-free way to isolate individual instruments from audio tracks. It allows musicians and students to split songs into separate stems—such as vocals, drums, bass, guitar, and piano—to facilitate practice, study, and remixing without relying on cloud-based services that require audio uploads.

How it works

It uses Meta's open-source Demucs neural network model to perform audio source separation directly on your local machine. You can import audio files or provide links from YouTube or SoundCloud. Once processed, the app provides a studio interface where you can mute, solo, loop, change the key, or slow down specific tracks. The application runs entirely offline after the initial model download, ensuring your audio files remain private.

Who it’s for

It is designed for musicians, music students, and producers who want to practice with specific instrument tracks or analyze song structures. It is ideal for users who prioritize data privacy and prefer open-source, self-hosted tools over commercial, cloud-based alternatives.

Highlights

• Splits songs into up to six distinct stems (vocals, drums, bass, guitar, piano, and other).
• Runs locally on your machine with no account, no subscription, and no audio uploading.
• Includes practice tools like tempo adjustment, pitch shifting, loop regions, and a built-in click track.
• Supports importing files or links from YouTube and SoundCloud with a built-in library management system.
• Provides a network-accessible interface, allowing you to control the mixer from your phone over Wi-Fi.