Nice, very original concept, and a funny cover of Für Elise! Could have more songs, and maybe some other construction tools (though I get it's only drills due to the jam theme). A few "notes" were unpleasant to the ear, but that was probably intended. Had a little bit of trouble, because ; and ' were at different spots on my non-English keyboard. There could have been some disco music in the menu to go with the dancing driller.