ZZ Top was an American rock band.
During the radio show KSJO, San Jose Zappa played "Cheap Sun Glasses".
"I also happen to like Black Sabbath and ZZ Top." - Zappa, interviewed in Zappa Digs Sabs Shock! (1978).
Zappa especially admired ZZ Top guitarist Billy Gibbons: "Billy Gibbons is an original. The style that he does, although I know a lot of the blues antecedents that it was derived from, he goes like that [raises middle finger again]. You've gotta have that in your playing." - Zappa, interviewed in Zappa's Inferno (1987).