I happened upon this bit of organological serendipitude via Make's blog, featuring a Pitch Bending Thumb Piano:
As an instrument, I think it's not totally successful, but certainly heuristic for those who think about musical experimentation. Lately I've been deeply immersed in a wide spectrum of African musics, and the clip sent me off on a search for some interesting variants of approach to "thumb piano" (so many other names... sanza, mbira, kalimba...). Here are some of the results:
Mbira at the LakePosted by oook at August 1, 2008 09:22 AMJazz improvisation on a 5 octave Array mbira
Garland - Suite for Bass Sanza
Don MacLane's musical instruments
Ken Kolodner Plays the Dulcimer-Mbira in West Virginia (and more via his Web site)