The Project X Zone dev team has been posting on the game’s blog regularly, giving insight into the game’s development and more. Its latest update – made today – focuses on the game’s music.
Details from the blog include:
– Over 45 songs
 – Each character has a song
 – When characters are paired together, one of their songs will be played randomly in battle
 – Songs will be played for solo units
 – Solo units will be detailed later
 – Some field map and event music are pulled from the source material
 – Original music is being created
 – Some music are for field maps
 – Other music is meant to go with scenario sequences
 – High tempo title song is original
 – This song is called “Mysterious Project”
Another Project X Zone blog update is scheduled for next week. The team will detail the title’s gameplay systems.
Thanks to 4Him for the tip.