Moises first emerged as an app that helped musicians to practise by removing or isolating the vocals and instruments in tracks.

However, its journey since has seen it add progressively more AI-powered features: licensed voice clones for example. Now it has added a fully-fledged AI-music studio… called AI Studio. But it’s not about making full songs.

Moises says that it’s “a stems-first, not songs-first, approach to AI music generation… a bandmate that listens, takes cues from the music you already have, and contributes a part that fits”.

That means generating audio parts to complement whatever the human musician has provided as a foundation: “an original session, a demo, or a single stem” as its blog post explained.

The model behind this is trained on a catalogue of licensed stems from partners including Tracklib, SourceAudio and Soundstripe, as well as unnamed independent labels and artists.

‘Stems not songs’ may be an emerging theme in AI startup-land: it’s also the focus for the recently-launched Mozart AI.