Watch: MARK TREMONTI Sings FRANK SINATRA Classics At London Concert

On December 15, Mark Tremonti -- guitarist/singer-songwriter/founding member of the rock bands CREED, ALTER BRIDGE and TREMONTI -- performed a set of Frank Sinatra classics with members of Frank's orchestra at London, England's Indigo at The O2. Video of the concert is available below. In May, Tremont...