David Lee Roth is an American rock vocalist, songwriter, actor, author, and former radio personality, best known as the original and current lead singer of Van Halen. In addition to his work with Van Halen, Roth is a successful solo artist, having released several platinum and gold solo albums. Sometimes referred to as Diamond Dave, Roth rejoined Van Halen in 2007 for a North American tour that became the highest grossing tour in the band's history..