From Webfoot Technologies:
With Piano Wizard, learning to play the piano couldn't be easier! Simply select a song, and using any compatible USB piano keyboard, play along. No prior musical experience necessary. As your skills improve, select more advanced levels of difficulty. This special holiday edition of Piano Wizard is set to a special Christmas theme and contains holiday songs. This game makes learning the piano fun!
If you do not have a USB piano keyboard, the self-playing demonstration mode included in this version will preview all the levels and features of the full version.