Melbourne Theatre Company's long-awaited production of The Heartbreak Choir will open on 29 April starring William McInnes (An Ideal Husband), Maude Davey (The Newsreader), Carita Farrer Spencer (Ladies in Black), Ratidzo Mambo (Escape from Pretoria), Emily Milledge (The House of Bernarda Alba), Louise Siversen (Noises Off) and Julian Weeks (Savage Rivers).