Robert "Rob" Rock is an American heavy metal singer-songwriter, best known as the longtime frontman of Impellitteri, a position he has held from 1987 to 1988, 1992 to 2000, and now from 2008 to the present day. Rock has also released five albums as a solo artist, and performed with a number of other notable artists, including M.A.R.S., Joshua, Tobias Sammet, Axel Rudi Pell and Warrior.