Volume 1: Easy to Medium. By Anton Rubinstein; Bedrich Smetana; Francois Couperin; Franz Schubert; Georg Philipp Telemann; George Frideric Handel; Ignaz Joseph Pleyel; J.J. Mouret; Jacques Offenbach; Jan Ladislav Dussek; Jean Baptiste Duvernoy; Johann Friedrich Reichardt. Arrange…

(World Music). Arranged by Helmut Hodl. For 2 Clarinets. World Music. Published by Universal Edition

For Viola. By Larry Clark, Doris Gazda. Arranged by Doris Gazda, Larry Clark. String duet. For Viola. Progressive Duets. Classical. Level: Easy to Medium. Soft Cover. 32 pages. Published by Carl Fischer.

By Larry Clark Various. Arranged by Doris Gazda Larry Clark. For Bass I and II. Standard notation. Published by Carl Fischer

Written by William Leavitt. Instructional book for guitar. With standard guitar notation (no tablature), instructional text, chord names and fingerings. 408 pages. Published by Berklee.

By Doris Gazda Various. Arranged by Larry Clark Doris Gazda. Published by Carl Fischer.

By Bernhard Henrik Crusell. For 2 clarinet. Published by C.F. Peters.

Progressive Duets for Cello, Vol. 2 by Larry Clark Various. Arranged by Doris Gazda Larry Clark. For Cello I and II. Standard notation. Published by Carl Fischer

(Piano Duet). Composed by Various. Edited by Melvin Stecher and Norman Horowitz. For Piano, 1 Piano, 4 Hands. Piano Duet. G. Schirmer #SH19016. Published by G. Schirmer

By Ernesto Koehler. For 2 Flutes. 2 Flutes. Published by Carl Fischer.

Seven Progressive Duets and Trios for Violins Or Violin Ensemble. Composed by Mordecai Seter. With Standard notation. Duration 11 minutes. Israel Music Institute #IMI035 II. Published by Israel Music Institute (PR.514017520).

3 Progressive Piano Duets/Later Elementary to Early Intermediate Level. By Naoko Ikeda. Willis. Published by Willis Music.

(15 more progressive duets for jazz-oriented like instruments). By Carl Poole. Mixed Instruments - Flexible Instrumentation. Jazz. Level: (III-IV) (grade III-IV). 36 pages. Published by Alfred Publishing.