So called because it produces better do(ugh)nuts than music. This coincidentally has a bit to do with the original breakfasts taken in Cowcliffes, where donuts would appear as if by magic upon the machine.
As you can see, it's cleverly disguised as a piano. However, it is officially classified by the Charter as a non-piano, and any attempts to 'play' it have proved to be an effective means of torture. The one you're looking at is the second such object d‚art, the original having been destroyed by a courtyard sculpture entitled "Burning Piano."