The Pirates of Penzance or The Slave of Duty, Act 1: No. 9, Recitative, "What ought we to do?" (Edith, Kate, Girls) - No. 10, Duet with Chorus, "How beautifully blue the sky" (Mabel, Frederic, Girls)

Chœurs René Duclos

Chor des Staatstheaters am Gärtnerplatz

Sophia Keiler

Jutta Vulpius

Friederike Apelt

Owen Willetts

Maria Callas/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre

George Baker/Monica Sinclair/Glyndebourne Chorus/Pro Arte Orchestra/Sir Malcolm Sargent

Richard Lewis/Heather Harper/Marjorie Thomas/Glyndebourne Chorus/Pro Arte Orchestra/Sir Malcolm Sargent

Wilma Lipp: Sopran; Christa Ludwig: Mezzosopran; Eberhard Wächter: Bariton; Karl Terkal: Tenor; Philharmonia Chorus;