The game just came out in Japan, so all of the music in it will soon be available.

There's 171 songs in all. (195 with DLC)

Official Newgrounds BBS Thread

Part A

Part B

Part C

Part D

Part E

Part F

Part G

Part H

Part I

Part J

10-Hour Section 1

10-Hour Section 2

10-Hour Section 3

10-Hour Section 4

10-Hour Section 5

10-Hour Section 6

10-Hour Section 7

10-Hour Section 8

10-Hour Section 9

10-Hour Section 10