The Extensible Toy Piano Project

Clark University hosted a festival this weekend that was part of a
project organized by Matt Malsky and David Claman (http://www.clarku.
edu/xtp/xtp.html ). I missed the extended technique pieces but it was
fun hearing ways the composers considered these little instruments
last night. I decided they are a kind of evil twin to the clavichord
or at least a disowned sibling to the harmonium.

Clark

US 137,243. A. Schoenhut. Musical Instruments. 25.03.1873.