A minor second forms the blood motif in this work, in which an armory, a lake of tears, and a torture chamber are behind three of the seven doors in the titular structure now home to Judith.
At one point in this opera, a character bangs on a door and the entire building around her makes a "cavernous sighing" noise, and later, a blinding ray of light is accompanied by a C major chord in the entire orchestra. It begins with a sometimes-omitted spoken prologue that asks whether the stage is "outside or in." A minor second forms the blood motif in this work, in which an armory, a lake of tears, and a torture chamber are behind three of the seven doors in the titular structure now home to Judith. For 10 points, identify this psychological opera in which Judith discovers the three former wives of the title character, a work of Bela Bartok.
At one point in this opera, a character bangs on a door and the entire building around her makes a "cavernous sighing" noise, and later, a blinding ray of light is accompanied by a C major chord in the entire orchestra.
Duke Bluebeard's Castle [or A k?szak?l? herceg v?a]