narad
Progressive metal and politics
Popularity would be perfect for record labels seeking to make maximum profit, but not really for any other situation. Generic sounding "goodness" doesn't lead to musical innovations. AI will copy what it is programmed to deem desirable. Musical innovation is achieved through someone doing something for the very first time, not by following existing patterns.
My comment above provides the fundamental reasoning, but here's some examples:
- Would AI have thought "what if guitars had steel strings instead of nylon?"?
- Would AI have thought "what if I plucked the strings with a shard of tortoise shell instead of my fingers?"?
- Would AI have thought "what if I slide this metal tube across the fretboard?"?
- Would AI have come up with over the top whammy use (dive bombs etc.) after someone invented the Floyd Rose to achieve improved tuning stability?
- Is AI able to invent new guitar techniques, such as sweep picking, bends, vibrato, hammer-ons / pull-offs, legato, staccato etc.?
- Is the lead guitarist of an AI band going to lose their fingertips in a factory accident, then subsequently change their tuning and string gauge to compensate for this, creating a new tone that inadvertently leads to a new genre?
- Is AI capable of inventing a new vocal technique / style? (e.g. death growl, throat singing, scat, yodelling or even Jack Black's inward singing haha!)
AI could theoretically have come up with something "innovative" like Nightwish (if they didn't already exist), by combining operatic vocals with metal, but only if operatic vocals and metal music already existed. It couldn't have invented the operatic singing style or the metal music style.
Well I mean...yes? You can use AI to invent new timbers from interpolations or extrapolations from existing sounds. This can even include sounds that are not originally musical in nature, which in theory makes it much more general starting point than your typical musician. If you really want it to be vocal, you could incorporate a model of the vocal tract and explore variations on possible sounds there, though I don't think that's on anyone's to-do list.
Your list seems really stuck in the context of physical inventions that humans then utilized, as some sort of innovation. But any innovation in musical tool could then be incorporated into a model. A new sound might need some human feedback to steer the model towards utilizing it in pleasing ways (since it would likely not have reasonable model of how humans perceive or enjoy such sound combinations) but nothing stands out as "dealbreaker".