Out of all the Nintendo Labo Toy-Cons we've seen so far, it seems the piano might be the most sophisticated. There's lot of fancy stuff going on inside with the Toy-Con itself and the use of the Joy-Con IR camera to create sound through key presses. The mechanics seem pretty deep, and now we know you can take things even further with your own drawings.
With the piano Toy-Con, you'll be able to draw and cut out your own sine graph. You can thank slot it into the piano, then hold down a key for the IR camera to read what you've drawn. This will then adjust the note pitch for a different type of sound. I cannot wait to see what people come up with for this!