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.
Carl Heinrich Graun (1703/4–59) was one of the two most famous composers of Italian opera in 18th-century Germany, his only serious rival being Johann Adolf Hasse at the court in Dresden. He was the court composer of Prussian King Frederick the Great. He wrote at least 26 highly acclaimed operas for the Berlin Unter den Linden opera house that Frederick built for that purpose, in addition to the six he had written for an earlier patron.