It seems that mechanical musical instruments do not meet all the
technical criteria to qualify as robots.  But I think that most people
might allow enough 'leeway' in the definition to let certain cases seem
valid.  After all, people _want_ to be amazed and delighted.

My case in point: when I tell people about a push-up player and describe
it as a machine designed to mechanically play pianos, I get a moderately
interested response.  When I tell them about a 100-year-old digital robot
which plays the piano keys with mechanical fingers, it really sparks
people's imaginations and their eyes begin to light up.

I rest my case.

Jurgen Goering