Peter Opaskar
20 Duets for Horn- 20 Duets for Horn and Tuba
- 20 Duets for Low Brass
- 20 Duets for Trumpet
- Renaissance and Baroque Suites, Vol. 1 - B-Flat Instrument Book
- Renaissance and Baroque Suites, Vol. 1 - Bass Clef Book
- Renaissance and Baroque Suites, Vol. 1 - e-Flat Instruments Book
- Renaissance and Baroque Suites, Vol. 1 - F Instruments Book
- Renaissance and Baroque Suites, Vol. 2 - B-Flat Instruments Book
- Renaissance and Baroque Suites, Vol. 2 - C Bass Clef Instruments Book
- Renaissance and Baroque Suites, Vol. 2 - C Treble Clef Instruments Book
- Renaissance and Baroque Suites, Vol. 2 - e-Flat Instruments Book