Firesign Theatre Sez: 'Everything You Know is Wrong' (Everything You Know is Wrong) (1975)

Great news! A meteorite has punched a bottomless pit in the earth, and famed daredemon Rebus Cannibus is going to leap it on his cycle. Meanwhile, mild-mannered trailer park manager Art Wholeflaffer records yet another mind-expanding message to the seekers of the world, follow-up to his hit "Gas Music from Jupiter." Because, as we all know, there's a seeker born every minute! What Art doesn't know is he's about to be contacted by piano-playing aliens bent on world conquest! Or maybe they've just come to see to it everyone learns to play the piano.