This new musical by singer-songwriter Duncan Sheik (Spring Awakening) and musician-writer Kyle Jarrow (SpongeBob SquarePants: The Broadway Musical; the rock group SkyPony) is a Gothic affair, set during W.W. II in a Maine lighthouse that just might be haunted. Helmed by Steve Cosson, artistic director of the documentary theater company The Civilians, Whisper House combines mainstream talent and avant-garde edge. —K.F.