It's Halloween this weekend. I did a quick Google search for "karlheinz stockhausen mask" and nothing came up, so I made one. (Click to enlarge.)
While enjoying your resultant candy haul (which, if you want to be clever, you can separate into seven different categories and then eat by following the score to Plus-Minus), fire up the video-on-demand and take in The Mephisto Waltz, a 1971 bit of devilish goofiness (from the director of Gidget!) featuring Curt Jürgens as a dying concert pianist who becomes very interested in Alan Alda's hands.
(The score is by Jerry Goldsmith, getting a nice avant-garde warm-up for his music for The Omen series.)