I 1969 slog The Mothers Of Invention sig sammen med Frank Zappa, for at lave en fantastisk plade, som blev navngivet "Mothermania: The Best Of The Mothers". Navnet siger sig selv: Denne plade indeholder de bedste numre fra The Mothers Of Invention, krydret med lidt Frank Zappa.

Trackliste:
A1: Brown Shoes Don't Make It
A2: Mother People
A3: Duke of Prunes
A4: Call Any Vegetable
A5: The Idiot Bastard Son
A6: It Can't Happen Here
B1: You Are Probably Wondering Why I'm Here
B2: Who Are the Brain Police?
B3: Plastic People
B4: Hungry Freaks, Daddy
B5: America Drinks and Goes Home