For Violin and Viola - with Comments in English. By Franz Joseph Haydn. Edited by A. Friesenhagen " Cadenzas: K. Guntner. String Duos and Trios. Pages: VI and 49. Urtext edition (Paper-bound). Published by G. Henle.

By Carl Stamitz (1745-1801). Edited by Kenneth Martinson. For violin, viola. This edition: Urtext, Bookstyle Bound. In the keys of C, F, B-flat, E-flat, E, D. Classical. Level 4 (of 6). Playing score. Text Language: English. 64 pages. Published by Gems Mu

By Carl Stamitz (1745-1801). Edited by Kenneth Martinson. For violin, viola. This edition: Urtext, Staple Center Bound with 1 insert. In the keys of G, A, E-flat. Classical. Level 6 (of 6). 2 Playing scores. Text Language: English. Op. 12 no. 1-3. 38 page

By Carl Stamitz (1745-1801). Edited by Kenneth Martinson. For violin, viola. This edition: Urtext, Staple Center Bound with 1 insert. In the keys of D, G, C, A, D, E-flat. Classical. Level 5 (of 6). 2 Playing scores. Text Language: English. Op. 19 no. 1-6. 44 pages. Published by Gems Music Publications