The orphica may be regarded as a small portable piano. It has a keyboard and soundboard, and the instrument is hung around the neck of the musician, or played on the lap. It has a long neck, like the guitar, which functions as structural support for the longer strings.
Source:
http://en.wikipedia.org/wiki
Source:
http://wiki.hammerfluegel.net/index.php/Orphica
The orphica was invented by Carl Leopold Röllig (1740-1804), probably in 1795.
http://www.audionewsroom.net/2010/10/orphica-rare-portable-piano-sampled.html