With the passing of Sir Harrison Birtwistle last month we are witness to a changing of the guard in new classical music. For 70-odd years contemporary music in the West was dominated by a highly exclusive atonal mode of thought that produced works that were hostile to the wider music-loving public and written for a small but highly subsidised cultural circle. If it was spontaneous when it began, the atonal idiom – meaning a highly dissonant style – quickly ossified into a kind of luxury backwater of music, so obscure it couldn’t even be questioned, yet endlessly backed by public subsidy which the public could nevertheless never challenge. It became an immovable impediment to other musical idioms that might better serve the public and retain an audience in the broader sense.