I’ve never seen this hooktheory site before but wow some of the chord charts for Nakata stuff are the best I’ve seen. Woulda been actually so helpful learning some of this stuff. Kind of hit or miss but the good stuff is really good when you hit the just piano button https://www.hooktheory.com/theorytab/view/capsule/hello spice has some whiffed chords and needs the post-chorus! https://www.hooktheory.com/theorytab/view/perfume/spice spotless https://www.hooktheory.com/theorytab/view/capsule/plastic-girl tilts me when stuff is wrong though, like Kamaitachi is missing the chords that make the whole song interesting (should be in the second time thorugh the chorus progression) https://www.hooktheory.com/theorytab/view/kyary-pamyu-pamyu/kamaitachi whereas Mondai Girl nails the the peculiar chords in the pre-chorus https://www.hooktheory.com/theorytab/view/kyary-pamyu-pamyu/mondai-girl go go fine day in piano is fun https://www.hooktheory.com/theorytab/view/capsule/go-go-fine-day

Also fascinating are the charts analyzing the complexity of the composition. They consistently show simple as heck melodies on top of off-the-charts complex chords. It’s data validating what I’ve found so fun for years

Example from https://www.hooktheory.com/theorytab/view/capsule/rgb

A chart showing rgb by Capsule having low melody complexity and high chord complexity