ZZ Top is a hard rock band formed in 1969 in Houston, Texas. For 51 years, it was composed of vocalist-guitarist Billy Gibbons, drummer Frank Beard and bassist-vocalist Dusty Hill, until Hill's death in 2021. ZZ Top had developed a signature sound based on Gibbons' blues guitar playing style and Hill and Beard's rhythm section. They are popular for their live performances, sly and humorous lyrics, and the matching appearances of Gibbons and Hill, who wore sunglasses, hats and long beards.