Claudio Simonetti - Demon

Claudio Simonetti was keyboarder and founding member of the Italian progressive rock band Goblin known for their soundtracks for Dario Argento films (including Profondo Rosso (Deep Red) in 1975 and Suspiria in 1977) which reunited in 2000 and later returned for a series of live concerts in Europe in 2009. 

Goblin history 

After the initial Goblin split in 1979, Claudio released excellent Italo disco records under his own nam, but also with Crazy Gang or Vivien Vee. He also contributed soundtracks like this one. Dance of the Demons (Italian: Dèmoni) is a 1985 Italian horror film directed by Lamberto Bava and produced by Dario Argento.

Dance of the Demons

The main title is very dramatic, though dancable. On your next Halloween party this will be the climax of the evening.

The video is nice as well giving Dario Argento a short appearance in the beginning and projecting Claudio to be part of the movie. Enjoy it if you can.