Volume 1. 40 Late Elementary / Intermediate Selections in Their Original Form. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Alfred Masterwork Edition: Essential Keyboard Repertoire. Masterwork. Book. 160 pages. Alfred Music #00-16747. Published by Alfred Music (AP.16747).
Volume 2. 25 Intermediate / Late Intermediate Selections in Their Original Form. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Alfred Masterwork Edition: Essential Keyboard Repertoire. Masterwork. Book. 160 pages. Alfred Music #00-20856. Published by Alfred Music (AP.20856).
Volume 6. Music by J. C. Bach, Beethoven, Brahms, Dvorak, and Mozart. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Alfred Masterwork Edition: Essential Keyboard Repertoire. Masterwork; Recital. Book. 170 pages. Alfred Music #00-36434. Published by Alfred Music (AP.36434).
Volume 4. 7 Transcriptions for Late Intermediate to Early Advanced Pianists. Edited by Lucy Mauro and Scott Beard. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Alfred Masterwork Edition: Essential Keyboard Repertoire. Masterwork; Recital. Book. 136 pages. Alfred Music #00-32803. Published by Alfred Music (AP.32803).
Volume 3. Music by Bizet, Debussy, Faure and Ravel. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Alfred Masterwork Edition: Essential Keyboard Repertoire. Masterwork. Book. 160 pages. Alfred Music #00-21439. Published by Alfred Music (AP.21439).