Samuel Roy Hagar (born October 13, 1947), also known as The Red Rocker, is an American rock vocalist, guitarist, songwriter, musician, and entrepreneur. Hagar came to prominence in the 1970s with the hard rock band Montrose. He afterwards launched a successful solo career, scoring an enduring hit in 1984 with "I Can't Drive 55". He enjoyed commercial success when he replaced David Lee Roth as the lead singer of Van Halen in 1985, but left the band in 1996. He returned to the band for a two-year reunion from 2003 to 2005.