Yep, now there are just two more songs to add to the list.

I'll give you a couple hints....

1. One of the songs plays in a battle that is seemingly impossible to win, and even if you win....the story plays out as if you lost.
2. The other battle is a timed battle.

EDIT: I just realized there are actually another two songs that are played in the battle. My hint for that is, one is at the very begining of the game and one nearly at the end.

Good luck. Any guesses DPC, Takara, or Mullet Man?