Full spoilers
This map is simply impressive. somehow you (found a way) to use the album song titles to build the entire thing while also adhering to the concept of unique/only/one mentioned at the start.5/5 on quality and theme.
Some of the puzzles I didn’t understand, like dragon, or ~50% of the 15 area, luckily It was easy enough to google hymn for a scarecrow and sacred beast and ended up figuring the theme. Also, thank you for making the panels that are not part of the path unsolvable.
On uniqueness, There are a few other lingo maps make you figure out which panels should be solved before solving them. but really I can name 4 of them off the top of my head. so still very unique.