"Eyes and Ears: An Anthology of Melodies for Sight-Singing" by Benjamin Crowell, converted to Clairnote music notation by Paul Morris.
Download a pdf: http://clairnote.org/sheet-music/
Original version in standard notation: http://www.lightandmatter.com/sight/sight.html
Building from source requires the most recent "clairnote.ly" file: http://clairnote.org/software/