Hello once again fellow duck! Good to see you in a jam once again. :)
Started up without reading the title at first, and the first track being a opening theme welcoming me into the game was definitely my first thought here though, love the use of percussion, simple, but complements this upbeat track very well.
I liked the mix of eras, there's a clear distinction, and the tracks, with artistic choices and all, captured these eras very well!
"An Era Of European Enlightenment" is my favorite, I love the instrumentation and how the music dances around, it's good ol' ball going on, and I am all here for it.
If I understood it correctly, these puzzles are not timed? So the theme revolves more around time travelling? I really like your take on the theme, it's different in the good of ways!
Perhaps some of the tracks can feel a little bit too busy for a puzzle game, where you might want something quite minimalistic to leave the brain undistracted. Though since you mention "quick and fun" puzzles, I imagine this isn't a Myst level of puzzles, and more something with just enough challenge to be rewarding, but not enough to make you stuck and grind your gears for hours. So I'd say, in that case, your playful style definitely does the job. Really nice work!