Douglas Darden laughter was the laughter of three young girls, who were, in essence, their clients: the fourteen year-old twins, Cass and Polly, and their nineteen-year-old friend, Helen. Cass and Polly are most likely feminized renderings of the celestial twins of Greek mythology, Castor and Pollux (better known as Gemini), and their sister, Helen of Troy. Many of his original sketches and drawings for Oxygen House are now owned by the Museum of Modern Art, along with a select few of "Sex Shop" drawings; gifts of Darden's widow. The remainder of his drawings are held at the Avery Architectural and Fine Arts
Castor et Pollux The opera no longer begins with Castor's funeral; a wholly new Act One was created explaining the background to the story: Telaira is in love with Castor but she is betrothed to Pollux, who is prepared to give her up to his brother when he finds out. Unfortunately the wedding celebrations are violently interrupted by Lynceus and a battle breaks out in which Castor is killed. Acts Three and Four were merged and the work as a whole shortened by cutting a great deal of recitative. Castor et Pollux Castor et Pollux ("Castor and Pollux") is an opera by Jean-Philippe