Al Di Meola
From Zappa Wiki Jawaka
Al Di Meola performed with FZ at a concert at the Ritz in New York, 11/17/81. Frank wanted to release this performance officially, but Al refused because he didn't think his solo was good enough. Oddly enough, Guitar Player Magazine conducted a poll to create a list of memorable concerts and this particular show at the ritz was named "best concert ever by anyone".