A neat musical puzzle, good concept!
The timer inside the whiteboard dimension seemed to be too short on the first try every time, I could never travel the full area let alone pick up all the notes. Putting the notes into the needed jingle is challenging but kind of fun. It's hard to know which symbol will play which not, especially if you exit full screen mode to check if any controls were listed, since I couldn't find a way to make the window full screen again afterward. As to why I was looking for controls, there also doesn't seem to be a way to remove a note that you know is wrong once it's been placed.