An American Blues-rock band formed in Houston, Texas, hold the distinction of being one of the few rock groups still composed of its original members; Billy Gibbons (guitar and vocals), Dusty Hill (bass guitar and vocals), and Frank Beard (drums). Nearly as well-known as their music is the group's appearance: Gibbons and Hill are always pictured wearing "Cheap Sunglasses," similar (if not matching) clothing, and their trademark chest-length beards while, perhaps ironically, Beard sports a mustache but not a beard. Their song lyrics often feature sexual innuendo and humor. The origin of the band's name is derived from the name of blues master B.B. King. They wanted to call themselves Z.Z. King but sounded too similar to their blues legend hero. They figured that "King" was at the "top" so thus settled on ZZ Top.