(8 Standards from the Baroque, Classical, and Romantic Periods). Edited by and arr. Patrick M. Liebergen. For Voice. Book; CD; Duet or Duo; Masterworks; Vocal Collection. Masterwork Arrangement; Sacred; Secular. 88 pages. Published by Alfred Music

(Contemporary Arrangements of 10 Favorites from the Great American Songbook). Edited by Sally K. Albrecht. For Voice. Book; Duet or Duo; Vocal Collection. For Two Series. Standard. 88 pages. Published by Alfred Music Publishing

(8 Contemporary Duets on Popular Holiday Songs). Edited by Andy Beck. For Voice. Book; CD; Duet or Duo; Vocal Collection. For Two Series. Christmas; Secular; Winter. 72 pages. Published by Alfred Music