Medea, Op. 23, (1946) is a ballet suite by American composer Samuel Barber. It was commissioned by the Ditson Fund of Columbia University for Martha Graham and was premiered on 10 May 1946, at Columbia University's McMillin Theater, New York City. The ballet was originally called Serpent Heart, but the work was revised in 1947 and retitled Cave of the Heart. Costumes were designed by Edythe Gilfond and the set was created by Isamu Noguchi. The original cast list included Graham, Erick Hawkins, Yuriko, May O'Donnell, and other members of the Martha Graham Dance Company.