- Zappa Records, Barking Pumpkin Records
Hot Rats is the second solo album by Frank Zappa. It was originally released in October 1969. Five of the six songs are instrumental; the other, "Willie the Pimp", features vocals by Captain Beefheart. It was Zappa's first recording project after the dissolution of the original Mothers of Invention. In his original sleeve notes Zappa described the album as "a movie for your ears"
Issued in a gatefold cover.