It turns out that Frank Zappa was an ad man, too.
"In 1967 I hired Frank Zappa for $2,000 to do the sound track for this animated TV commercial that I was animating and producing. It won a Clio award for 'best use of sound.' It was the beginning of a two year relationship that had me filming 14 hours of footage to be used for a film he called 'Uncle Meat'." - Ed Seeman
Video: Zappa's Luden's Cough Drops