Fun Facts regarding "Pure Pure Heart":

* This song is, along with MANY others, an insert for the anime "K-On!"
  (Awesome anime, by the way; I recommend watching it.)

* At first, I didn't like the way the Expert chart turned out, so for a
  while, it only had Hard and Expert, and was queued as a possible
  for-deletion item.  It took two weeks before I decided I liked it and
  had done as good a job on it, and wrote the other three difficulties.

* During beta-testing, the Expert chart was rated a 10.  *laughs*

* What makes the Expert chart flow the way it does is that it follows
  the electric guitar and the drums (yay Yui and Rits!)

* The Hard chart's rolls were placed with freestyling in mind (i.e., the
  player can drum away any way they want).