All good actors are very bright. You can't be stupid and a good actor. You may be inarticulate, you may not be highly educated, but all good actors are quick-witted, some of them dazzlingly so. All you do is guide them.
But there's actually a lot of punk bands out there that go out of the norm, use odd time signatures, or a lot of different tempo changes in a song.
Classical musicians do this all the time. They want perfection. So they piece things together. Eight bars of this and six bars of that. Glenn Gould said that with a recording he wanted to make perfect versions of pieces.

