After spending several years as the lead vocalist and rhythm guitarist for the mid-'70s hard rock band Montrose, Sammy Hagar began a solo career that produced several hits and made him an album rock favorite. Hagar became a true star once he joined Van Halen in 1985, but he'd been a popular hard rocker ever since his first album with Montrose.
After giving up a boxing career, Hagar began singing in the late '60s, performing with various California bands including Skinny, the Fabulous Catillas, Justice Brothers, and Dust Cloud. During this time, he built up a solid reputation in the California hard rock scene. Former Edgar Winter guitarist Ronnie Montrose asked Hagar to join his band, Montrose, in 1973. Hagar recorded two albums with Montrose before going solo in 1976, taking the group's bassist, Bill Church, with him. Montrose's drummer Denny Carmassi later joined Hagar's band, along with keyboardist Geoff Workman. - allmusic.com