A Dulcimer is one of those interestingly named musical instruments that
probably enjoy some sort of exotic status. It just caught my attention 'cos
Rahman has (like Shankar-Ehsaan-Loy and the trivially famous digderidoo) used
a dulcimer in a song in his latest release Kaadhal Virus. It's credited
to a guy called John Asher (on whom a Google Search seemed to indicate that he
is a well-known exponent in that instrument). I'm not exactly sure what it
sounds like, 'cos that song had a couple of quaint instruments alongside.
Anyway, here are some links which at least tell one what a dulcimer looks
some history, and this.