Mark Robert Boals (born December 5, 1958) is an American singer songwriter for the band Foundry. He is a heavy metal vocalist and occasional bassist, best known for his vocals with Yngwie Malmsteen. His first album with Malmsteen, Trilogy achieved platinum status in the USA and sold several million copies worldwide. As a young child, he learned to play the piano and bass guitar. Although Boals has never had any vocal lessons or training, as a teenager he gained experience as a vocalist in local groups. Boals is the founder and vocalist for the band Ring of Fire, and had a brief stint as the bassist for Dokken. He currently performs lead vocals, guitar and bass in the hit musical show, Raiding the Rock Vault in Las Vegas.