Demucs

Demucs Online is an AI audio tool that separates a song into individual stems, letting musicians, producers, and video editors isolate vocals, drums, bass, and more in the browser. It runs Demucs v4, the open-source music source separation model, so there is nothing to install locally. You upload a track in MP3, WAV, FLAC, M4A, AAC, or OGG up to six minutes, pick a model, and get back separate instrument tracks. There are three separation models: Standard and Best Quality both produce two to four stems, while the Six-Stem model adds guitar and piano isolation. A four-minute song processes in about 20 seconds, and a built-in stem player lets you solo or mute each part to preview the result before downloading. Output is available as 320 kbps MP3, 16-bit WAV, or 24-bit FLAC, with the 24-bit FLAC option reserved for a paid plan. Uploads are deleted automatically and are not used for training. For BestAIFor readers comparing stem splitters, Demucs Online is a strong pick when you want the quality of the Demucs v4 model without running Python locally — useful for remixing, karaoke, transcription practice, and pulling clean tracks for video edits.

Separating songs into vocal, drum, bass, guitar, and piano stems for remixing, karaoke, and video editing