ฅ/ᐠ｡ᆽ｡ᐟ \ Hello~
Nice little game you have here, and I commend you for creating all the assets presented here. I loved the part with the music notes and castle puzzle - those maps were a treat to wander in and experience. My only minor complaint is the short duration of the game as I saw a lot of potential near the end of the game, but was disappointed that it stopped when I wanted more.
To be honest, I thought the game was glitched at first as I was stuck in the first map without triggering anything. Beyond the first level, everything was enjoyable, and I loved some of the small details involved with the puzzles. Reversing the music was a nice touch, and I thought it was amazing to see the assets change art styles.
Overall, nice job! Lovely music as well.