I really enjoyed this game! I love rhythm games so had a lot of fun with it. At the moment there doesn't seem to be any way to fail, and the game seems to continue in an endless loop, so if you wanted to expand this further you could look into adding some code that checks if the player missed a certain amount of notes, and if they did they have to restart for example. A score system would also be great, and maybe even some visual feedback when you click to show that your hit was registered. Really good job overall, I hope you get to work on this more!