Berr, Bertalotti, Blavet, Chedeville, Devienne, Fehre, Furstenau, Geminiani, Geopfert, Glazounov, Glinka, Halven, Hasse, Haydn, Hoffmeister, Keller, Komarovski, Krakamp, Muller, Pushechnikov, Ramain, Schroder, Shostakovich, Steffani and Wlassow . CLARINET DUET. Thirty three carefully graded duets featuring works by Hoffmeister, Haydn and Furstenau. Pieces are approximately Grade: 3 - 6 standard.