The director, Alan Arkbush worked at the Fillmore East and Get Crazy is his tribute to that venue (and what a poor tribute it is). Get Crazy is set on December 31, 1982 and The Saturn (Fillmore) is in danger of being torn down to make room for a high rise office building. If the evil real estate baron gets his way, this will be the last New Year's Eve concert at the famous music hall.
There are a lot of musicians appearing in Get Crazy and they're the only reason I would recommend watching this disaster of a movie. Howard Kaylan of The Turtles plays Captain Cloud (think Jerry Garcia), who arrives with his band The Rainbow Telegraph in a bus that looks very similar to The Merry Pranksters Further bus. Lori Eastside from Kid Creole and The Coconuts is joined by Lee Ving (of the punk band Fear) who plays a character named Piggy (as in Iggy Pop) . Bill Henderson plays King Blues, a ripoff of any great blues artists you might think of and Malcolm McDowell does a great job as a composite of Mick Jagger/David Bowie and his drummer Toad is played by John Densmore of The Doors. Lou Reed plays a version of Bob Dylan and when we first see him in Get Crazy, he's in a set reminiscent of Dylan's Bringing It All Back Home album cover. Teen Idols Fabian and Bobby Sherman do not perform, but have roles as henchmen to the real estate developer.
It's beyond me how the director of Rock n Roll High School, one of the best and goofiest Rock movies ever made, could have made a movie as bad as Get Crazy. Filled with tons of sight gags that would only be humorous to 10-12 year old kids (and even they may be too old for this type of humor),this movie is terrible from start to finish. Even Arkbush, the directo,r has commented he wanted to make a realistic movie about a venue like The Fillmore, but the producer forced him into making an Airplane! type movie. I waited years to see this out of print movie, since it was loaded with so many great musical stars...what a major disappointment. I have read that Get Crazy has a cult following, all I can say is what kind of kool-aid are they drinking.