There is no string quartet that has ever been written that can compare length and diversity with Terry Riley's Salome Dances for Peace. Morton Feldman has written a longer one, but it is confined to his brilliant field of notational relationships and open tonal spaces. Riley's magnum opus, which dwarfs Beethoven's longest quartet by three, is a collection of so many different kinds of music, many of which had never been in string quartet form before and even more of which would – or should – never be rubbing up against one another in the same construct. Riley is a musical polymath, interested in music from all periods and cultures: there are trace elements of jazz and blues up against Indian classical music, North African Berber folk melodies, Native American ceremonial music, South American shamanistic power melodies – and many more. The reason they are brought together in this way is for the telling of an allegorical story. In Riley's re-examining Salome's place in history, he finds a way to redeem both her and the world through her talent.