Proof of the Pudding is Yale’s second-oldest all-female undergraduate a cappella group. It was established in 1975, a mere six years after women were first admitted to Yale. The name “Proof of the Pudding” is taken from Miguel de Cervantes’ Don Quixote: “The proof of the pudding is in the tasting.” Given the male-dominated world of Yale in 1975, the founding members of “Proof” had to prove themselves as veritable musicians. The name urged people not to dismiss Proof before they heard them sing.

Proof has its roots in jazz and swing, but has more recently expanded their repertoire to include a variety of music. Since its beginning, Proof has been known for its vibrant sound, enthusiastic performance style, and energetic repertoire.