Director Allan Arkush knew whereof he spoke in Get Crazy. A longtime employee of Fillmore East, a popular rock-concert locale of the 1960s and 1970s, Arkush brought a great deal of insider's savvy to this comedy about the concert circuit and its denizens. Malcolm McDowell stars as a Mick Jagger-type rocker who is one of several acts lined up for a big New Years' Eve show. If villains Ed Begley Jr., Bobby Sherman and Fabian have their way, however, the show will never get off the ground. The supporting cast is dotted with such cult-flick icons as Dick Miller, Jackie Joseph and Mary Woronov. The musical portion of the program is handled by the likes of Malcolm McDowell, Lou Reed (as a Bob Dylan type) and Bill Henderson (as a Muddy Waters takeoff). In case it hasn't been made clear already, the main "joke" of Get Crazy is the presence in the cast of actors as musicians and musicians as actors; it is to the film's credit that this one joke never wears out its welcome.
~ Hal Erickson, All Movie Guide