Double post as this is an amazing read from his drum programmer saying how Prince never made a mistake, and 'could play any instrument on the stage better than any of the band.' I got to this part and cracked up:

There was a rotating cast of sound men. He didn’t like it when the sound guy would tweak the mix while the band was performing; Prince could hear the mix change. The tour manager would try to bring in big-name engineers to mix his shows. I remember they brought in a guy who had just gotten off tour with Celine Dion, or someone like that, this guy who looked a bit like Darius Rucker, at the time when Hootie and the Blowfish were big. We’re doing a show at Paisley Park and halfway through, Prince says—over the PA—“Hootie, turn up my guitar.” Then, three quarters through, Prince says, “Hootie, you’re fired.”