World Of The Vampires, The (1960)

aka’s: El Mundo De Los Vampiros/The World Of Vampires/World Of The Vampire

A vampire (Guillermo Murray) uses two sisters (Silvia Fournier and Erna Martha Bauman) to seek revenge from the last member of a family that persecuted the undead in Europe, but his plan is threatened by a man (Mauricio Garcés) who knows how to destroy him with a peculiar piece of music, played with a piano made from skulls and bones.