Franz & Morton Singing Together in Harmony (With the Lord Himself Enjoying His Bells) is the title of a recent chamber-music work for violin, cello and piano by Wolfgang von Schweinitz. The musically erudite will have no difficulty in identifying the persons referred to by those Christian names. They are, of course, the two composers, Schubert and Feldman – who, with Schweinitz, form a trio which combines more as a community than merely professionally.