Rockula(1990)

Ralph is a sexually frustrated vampire who suffers from a peculiar curse. He's condemned for eternity to watch his one true love, Mona be murdered by a pirate wielding a ham bone. But now? Now it's 1990, and Ralph is determined to break Mona's cycle of reincarnation. His first order of business is winning her affections-- He does that by starting Rockula: a rock band that's sure to stake a claim on her heart.