Rock n Roll Frankenstein (1998)

A greedy record producer convinces his scientist nephew to help in constructing the word's greatest musician out of body parts from late, great rocks stars. From a wealthy businessman with the morbid hobby of collecting dead musician's body parts, they manage to steal the hands of Jimi Hendrix, the brain of Elvis, and more, but when it comes to the most important part of any rock n' roller (can you guess what part that is?) things get a little, um, confusing. Their superstar is complete and cranking out the hits, but soon enough, the monster desires individuality and a life apart from the one designed by his creators... which inevitably leaves a a trail of death and mass destruction.