Many of the tools you describe are already out in the field. Ableton Live and MAX4LIVE really opens up whole new sectors of tools for those who might be interes

Many of the tools you describe are already out in the field. Ableton Live and MAX4LIVE really opens up whole new sectors of tools for those who might be interested. There is a learning curve for music making software though, and it can be rather steep. That said, Instant Haus [1] does sort of what you describe, though it is targeted more for practicing musicians. I'm a fan of GarageBand's "Drummer" as well. [1] https://www.youtube.com/watch?v=KoIcewM8sKY https://www.youtube.com/watch?v=KoIcewM8sKY