The Lost Brothers are an Irish musical duo consisting of Mark McCausland and Oisin Leech, formerly of The Basement and The 747s. In 2006, Leech appeared on Arctic Monkeys' cover of Barbara Lewis's Baby I'm Yours, sharing lead vocals with Arctic Monkeys' Alex Turner. The song was released as a b-side on Arctic Monkeys' single Leave Before the Lights Come On. In 2014, The Lost Brothers recorded their fourth studio album, New Songs of Dawn and Dust, in Liverpool with producer Bill Ryder-Jones and features Nick Power from The Coral.