His first solo album, "Grace Period", was released in 2004. The album also served as his debut as a lead singer.
In 2006 he produced and played guitar for his band Trouble Club's debut EP, "The Unbreakable Heart". Also in 2006 he co-wrote and played guitar on Jethro Tull and TSO violinist Anna Phoebe's debut albumette "Gypsy". Jethro Tull went on to perform two songs co-written by Clark while on tour in Europe.
Clark also teaches at the National Guitar Workshop, a music school in the United States.