Hard core ZZ Top and Texas Blues fans know who Rocky Hill is. Very few others do, however, and that's a shame.
Rocky Hill was the brother of ZZ Top bass player and vocalist Dusty Hill, and in fact played in a psychedelic Blues band with Dusty in the late 60's. That band, a trio called American Blues, also included a certain drummer by the name of Frank Beard. Right there you had two-thirds of the future ZZ Top ready to go.
After the band broke up (with three albums to their credit) Beard joined a band being put together by a guitar player/singer named Billy Gibbons. When their bass player left Beard suggested his American Blues bandmate Dusty Hill, and the rest is history…