Xenosaga 2 - Jr.
Jr. #2 is a song from Xenosaga Episode II. It is track 17 in the Xenosaga Episode II Original Soundtrack, having been composed by Yuki Kajiura.
The song plays when Jr. is remembering the time in his childhood where his brother, Albedo, realizes that he is the only one of his siblings that cannot die, and thus, begins to lose his sanity as he breaks down crying in his brother's arms.
The song plays again during the scene where Jr. remembers Albedo "practicing" coping with his brothers' deaths by digging graves with his hands.