Using stylized abstract sets and disorienting herky-jerky movements by the actors, the 1920 German silent horror film “The Cabinet of Dr. Caligari” is a seriously creepy movie. Directed by Robert Wiene from a screenplay by Hans Janowitz and Carl Mayer, it’s one of the most influential films of the early-20th-century German expressionist movement and is widely considered the first true horror film ever made. Gallery5 screens the film with live musical accompaniment by Richmond sinister sound sorcerers Bermuda Triangles on Wednesday, Oct. 29. The combination of the band’s percussive bellicose binges and the film’s jagged, dancelike visuals is an enticing mixture of old and new terrorization aesthetics. The night of mashed, macabre entertainment begins at 8 p.m. Free. gallery5arts.org.