1 Piano, 4 Hands. By Various. Arranged by Eric Baumgartner. Piano Duet. Softcover Audio Online. Published by Hal Leonard

(Later Elementary to Early Intermediate Level - 1 Piano, 4 Hands). Composed by Various. Arranged by Carolyn Miller, Eric Baumgartner, and Glenda Austin. For Piano/Keyboard. Willis. Late Elementary to Early Inter. Softcover Audio Online. 32 pages. Published by Willis Music

(Later Elementary to Early Intermediate Level 1 Piano, 4 Hands). Composed by Various. Arranged by Carolyn Miller, Eric Baumgartner, and Glenda Austin. For Piano/Keyboard. Willis. Late Elementary to Early Inter. Softcover Audio Online. 32 pages. Published by Willis Music

(Later Elementary to Early Intermediate Level). Composed by Various. Arranged by Carolyn Miller, Eric Baumgartner, and Glenda Austin. For Piano/Keyboard. Willis. Late Elementary to Early Inter. Softcover Audio Online. 32 pages. Published by Willis Music

(1 Piano, 4 Hands/Early Intermediate Level). By Eric Baumgartner. For Piano/Keyboard. Willis. Early Intermediate. 8 pages. Published by Willis Music

By Various. Arranged by Carolyn Miller, Eric Baumgartner, Glenda Austin, and Naoko Ikeda. Willis. Duet, Pop. Softcover. Duration 180 seconds. Published by Hal Leonard

10 Seasonal Duets for Two. Composed by Various. Arranged by Eric Baumgartner. Willis. Christmas, Duet. Softcover. 48 pages. Published by Willis Music

John Thompson's Easiest Piano Course. Composed by Various. Arranged by Eric Baumgartner. Willis. Classical, Duet. Softcover. 32 pages. Published by Willis Music