Phil Jamison notes that his  "80-key Mortier uses pieces of 35 mm
motion picture film as the vibrating medium (Warner Brothers cartoons,
I believe).  They buzz nicely!"

I understand that Bugs Bunny cartoon shorts are the preferred films.
Remember how Bugs gives Elmer Fudd the raspberry?!

"So long, folks!"
Craig Smith
near Rochester NY (where they make Kodak film)