Robert Dennis James (1952 – February 2021) was an American rock singer-songwriter who was best known for his work with the band Montrose. Born in Struthers, Ohio, James moved to the South Bay area of Los Angeles in 1963. His early bands The Symbols of Time, Shatterminx, and Swan included David Pack (Ambrosia), Joe Puerta (Ambrosia), Robert Fleischman (Journey), and Marc Droubay (Survivor). In early 1975 he was chosen by Ronnie Montrose as the replacement for vocalist Sammy Hagar in the band Montrose and is featured as lead vocalist and co-songwriter on the Montrose albums Warner Brothers Presents... Montrose! (1975) and Jump On It (1976).