I'm not "limiting the entire grand sphere of music." OP brought up improvising over standards, which brings to mind the bop/post-bop/"straight-ahead" jazz world

I'm not "limiting the entire grand sphere of music." OP brought up improvising over standards, which brings to mind the bop/post-bop/"straight-ahead" jazz world, does it not? It definitely doesn't bring up concert bands. Obviously concert bands need their music -- it's highly composed, a larger ensemble, unlike the small quartets or quintets which are the context at hand. And yes, I'm well aware that the musical world is not "my little jazz bubble" (not mine -- read my other replies, I left that world for a reason). Sorry I somehow gave the impression that I'm some closed-minded curmudgeon. I'm actually anything but.