Castor and Pollux Castor and Pollux Castor and Pollux (or in Greek, Polydeuces) were twin half-brothers in Greek and Roman mythology, known together as the Dioscuri. Their mother was Leda, but they had different fathers; Castor was the mortal son of Tyndareus, the king of Sparta, while Pollux was the divine son of Zeus, who seduced Leda in the guise of a swan. Though accounts of their birth are varied, they are sometimes said to have been born from an egg, along with their twin sisters Helen of Troy and Clytemnestra. In Latin the twins are also known as the Gemini (literally "twins")
Castor et Pollux chorus then sings and dances in rejoice "Let Hell applaud this new turn! Let a mournful shade rejoice in it! The cry of revenge is the song of Hell.". The second air of the Spartans in C Major, a that allows for a trumpet obbligato part with all of its military associations. (Before valved instruments, the trumpet keys were C and D major.) The act concludes with a lengthy recitative in which Pollux professes his love for Telaira. Pollux expresses his conflicting emotions in the aria "Nature, amour, qui partagez mon coeur". If he does what Telaira says and manages