Download the two arranged versions of Song 4 u here!
Spoiler:
That's going to be VERY soon... it'll have an arranged version (aka not the original but a rearrangement maybe without vocals) out the day after the game comes out.
Note, this also mentions that the song is going to come out on recochoku today at noon.
The tracks have names on disc 3! The titles come from the lyrics after 2 u / 4 u.
Tada Hitori Kimi no Tame Nara ~Song 4 u~ and Shinjiteru Shinjirareteru ~Song 4 u~.
ただひとり 君のためなら ~Song 4 u~
信じてる 信じられてる ~Song 4 u~
Tada Hitori Kimi no Tame Nara ~Song 4 u~
Shinjiteru, Shinjirareteru ~Song 4 u~