Book 1. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Classical; Masterwork. Book. 48 pages. Alfred Music #00-6507. Published by Alfred Music (AP.6507).
Book 3. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Masterwork. Book. 64 pages. Alfred Music #00-16799. Published by Alfred Music (AP.16799).
Book 2. Edited by Gayle Kowalchyk and E. L. Lancaster. Duet or Duo; Graded Standard Repertoire; Masterworks; Piano Duet (1 Piano, 4 Hands); Solo Small Ensembles. Masterwork. Book. 56 pages. Alfred Music #00-16789. Published by Alfred Music (AP.16789).