I watched the whole video and the only new feature I saw compared to other DAWs is converting a singing clip to a trumpet clip (anyway, its better to generate t

I watched the whole video and the only new feature I saw compared to other DAWs is converting a singing clip to a trumpet clip (anyway, its better to generate track by track rather than have the whole song generated without any controls). In other aspects, it looks more like a toy DAW, like some iPad app with very limited features (didn't even have recording delay compensation). Also the UI looks like some web app, giant buttons and lot of unnecessary decorations. I wonder how they trained the model to generate clips, did they hire lot of musicians to record the samples, or just scraped multiple commercial instrument libraries without permission?