Omake-pfadlib

omake-pfadlib is the 16th song in the original soundtrack album. As with all the other OSTs, it was composed and arranged by Hiroyuki Sawano.

Trivia
In Japanese, "omake" (おまけ) refers to bonus material. "pfadlib" is an abbreviation of "pianoforte ad libitum", musical terms meaning "piano improvisation".