ZZ Top is an American rock band formed in 1969 in Houston, Texas. For 51 years, they comprised vocalist-guitarist Billy Gibbons, drummer Frank Beard and vocalist-bassist Dusty Hill, until Hill's death in 2021. ZZ Top developed a signature sound based on Gibbons' blues guitar 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.