You know what is an odd music royalty issue...hold music
I had a client years ago who wanted to play the Eagles Greatest Hits (against my critical advise mind you) on his hold music and he was willing to pay to be legit
Apparently this is next to impossible to do legally with the system we had, so royalty-free crap was all we could use
that's why you so often hear classical music...lots of royalty-free stuff out there
Not even supposed to play the radio...The current fine for playing radio music on hold is $1,500