Here are some more examples of solo guitar-zither playing.
(Angelfire does not permit direct linkages to files from outside their system, so it's necessary to take you through this page with the advertising.)
A tune (1.1MB) inspired by the Harp-O-Chord Harp-Zither, and played on an original Harp-Zither.
An untitled tune (1.1MB) dashed off as a birthday present for a friend; played on the Phonoharp No. 2.
Midnight On the Water (2MB) played on the Phonoharp No. 2.
A three part medley (3.5MB) played on the Phonoharp No. 2.