USB Xylophone

Old metallophone (toy) rejuvenated by Arduino, some electromagnets and printed parts :
https://vimeo.com/46571145
Detail :
https://vimeo.com/47593529
 
Can be played with mouse, keyboard and midi files,
samples included in software pack:
Georges Brassens - Ballade des dames du temps jadis
Agnes Obel - Riverside
Yann Tiersen - Comptine d'un autre été
Julian Nott - Wallace and Gromit
Michael Giacchino - Married Life (Pixar Up soundtrack)

Flash (AS2) on the software side:
http://chaaawa.com/xylobot/
 
Thanks to midicsv:
http://www.fourmilab.ch/webtools/midicsv/
 
Not the first xylobot in the world, but maybe the first in the Thingiverse !
Next step, same thing with homemade solenoids :
http://www.thingiverse.com/thing:6049
http://www.thingiverse.com/thing:5950
... and wooden bars
to make it sound more "xylo"