US4 Us4 is an Irish pop/rock band of four siblings from Birmingham, featuring  Áine (lead vocals and tin whistle),  Brendan (guitars),  Cormac (drums, percussion and piano) and  Declan (fiddle) Healy. Emanating from a rich musical background, Us4 is the triumphant culmination of a childhood of exposure to a vast and eclectic blend of music. A…