Today’s Google Doodle in honor of Oskar Fischinger’s 117th birthday is very impressive and fun. Click on the image on the linked page and then click on the image again. Click on the little squares to create your music. You can change all sorts of aspects of your creation by clicking on Modify on the bottom and making various selections on the left, and also by changing the instrument on top. (Note that as far as I can tell, changing the instrument reverts to a clean slate so take care with the timing.) Enjoy!