Fantastic presentation once again! This is such a charming game that's simply dripping with personality. Not to mention it's impressive how you manage to create such elaborate art pieces with a very limited colour palette.
I have nothing bad to say about the art and music, but I think the gameplay could use some variety, as it's not overly engaging, unless the target audience is mainly young children. I got stuck for a very long time on the final section, but I do appreciate that there's no fail state (at least none that I found). Also fun to hear your 'own' melody played back at you after the level is complete. Some more context to the story would be great as well, but I'm assuming this is due to time constraints.
Keep up the good work! I already look forward to your next project, and I am consistently amazed at how much you manage to do as a solo dev.