1. Sonata for Piano, Four Hands  (1966)
Composer and Sara Fuxon-Heyman, pianists, U. S. Cultural Center, Tel Aviv — November, 1971, Recording: GS 1060  Grenadilla Records.

2. Tehom for Three Pianos (1974)
Mark Wait, Meade Crane, Morris Cotel - pianists John F. Kennedy Center for the Performing Arts, Wash., D.C.— July,1975.

3. Piano Sonata (1976)
Composer performing,  Carnegie Recital Hall, New York — October, 1977,   Recording:  Grenadilla Records GS 1051.

4. Yetzirah for Two Microtonal Pianos (1979)
Meade Crane and Paul Hoffmann, pianists  "Meet the Moderns," Brooklyn Academy of Music,  October 29, 1981;   Great Hall, Cooper Union, New York, October 30, 1981.

5. Haftarah for Piano Solo (1986)
Performed by the composer, Adalman Recital Series, Friedberg Concert Hall, Peabody Conservatory of Music, Baltimore, April 1, 1987

6. Betelgeuse for Piano Solo (1991)
Performed by the composer, Adalman Recital Series, Cotel Plays Cotel, Friedberg Concert Hall, Peabody Conservatory of Music, Baltimore, January 27, 1993;  European premiere at Musikpodium Biel, Switzerland, Komponistenportrait,  Morris Moshe Cotel, composer/pianist.