I thought about the exact same thing when I first saw Spleeter and it turned out someone had already done it: https://github.com/diracdeltas/spleeter4max https:

I thought about the exact same thing when I first saw Spleeter and it turned out someone had already done it: https://github.com/diracdeltas/spleeter4max https://github.com/diracdeltas/spleeter4max Looks like the meat of this is using a JS script to invoke Spleeter using execSync so it might be quite simple to adapt to Demucs, maybe I’ll give it a go!