Hello! I've played all of the songs in your game a few times and I have some feedback for you!
- Before I even launched the game the line "Controls are as follows: use the mouse for everything." on the Itch page made me laugh. I'm sure it's not supposed to be funny even, idk, it got to me.
- The dog paw for the mouse pointer is really cute!
- Song 2 seemed much easier to me than Song 1. Not sure why 2 isn't the "introduction" song since most people are going to play them in order the first time.
- Could just be me though!
- Dogs are colorblind. How is he seeing the notes?
- More seriously, how are colorblind players seeing the notes? Perhaps you could add a colorblind mode where the notes are different shapes?
- It would be cool if the songs had names rather than just being numbered.
- Really cool interpretation of the theme!
- Song 2 has a gray note at the end? I thought it might just mean like 'end of song' but I didn't see it on the other two songs? What's that?
- Speaking of, the songs are really good! Liked the audio on this one!
- I do own a drawing tablet, I'll have to return to this game after the Jam rating period to try it with tablet controls. For now I just used my mouse because I didn't want to hook up my tablet right now, but that's such a cool idea!
- It would be cool if the game offered like a letter ranking based on your 3 combined scores at the end of each song.
- Would be nice if there was a settings menu or some way to return to the title card once you've clicked past it, especially since refreshing the page wipes your scores.
I think that's all my thoughts on this one. Cool idea, and really fun game! I hope none of my feedback sounds too negative! I'm trying to offer constructive criticism to every game I rate. Anyway, these are my high scores after 3/4 plays of each song:

Have wonderful day and good luck in the Jam!