William Frederick Gibbons is an American rock musician who is the guitarist, primary songwriter, lead vocalist and only constant member of ZZ Top. He began his career in Moving Sidewalks, who recorded Flash (1969) and opened four dates for the Jimi Hendrix Experience. Gibbons formed ZZ Top in late 1969 and released ZZ Top's First Album in early 1971. He has also maintained a solo career in recent years, starting with his first album Perfectamundo (2015).