Composed by Yasunori Mitsuda, released March 6, 2002 under the label of DigiCube, re-released May 19, 2004 under the label of Sleigh Bells with more tracks. Vocals were done by Joanne Hogg and Metro Voices. Kousuke Yamashita composed the new tracks used in the DS version of the game.
Disc 1[]
No.
Title
Japanese title
Length
1.
"Shion ~Memories of the Past~"
Shion ~過去の記憶~
1:15
2.
"Prologue"
Prologue
4:35
3.
"Gnosis"
Gnosis
4:25
4.
"U-TIC Facility"
U-TIC機関
2:49
5.
"The Girl Who Closed Her Heart"
心を閉ざした少女
2:15
6.
"Ormus"
Ormus
2:29
7.
"Nephilim"
Nephilim
2:33
8.
"Warmth <New Recording>"
温もり (new recording)
2:01
9.
"The Resurrection"
The Resurrection
1:53
10.
"Beach of the Void <New Recording>"
虚無の浜辺 (new recording)
2:35
11.
"Green Sleeves <New Recording>"
Green Sleeves (new recording)
2:27
12.
"KOS-MOS"
KOS-MOS
2:28
13.
"The Miracle"
The Miracle
1:53
14.
"Zarathustra"
Zarathustra
3:05
15.
"Ω"
Ω
4:08
16.
"Escape"
Escape
2:33
17.
"Pain"
Pain
5:39
18.
"Kokoro"
Kokoro
5:37
19.
"Shion ~Emotion~"
Shion ~想い~
1:24
20.
"World to be Born"
World to be Born
3:19
21.
"Pain -piano version- <New Recording>"
Pain -Piano Version- (new recording)
2:46
Disc 2[]
No.
Title
Japanese title
Length
1.
"Opening"
Opening
4:02
2.
"Battle"
Battle
2:59
3.
"Battle's End"
戦闘終了
0:42
4.
"Starting Examination"
起動試験
2:22
5.
"Thoughts"
想いで
3:19
6.
"Awakening"
覚醒
2:21
7.
"Shion's Crisis"
シオンの危機
1:54
8.
"Fighting KOS-MOS"
戦闘するKOS-MOS
3:19
9.
"Sadness"
哀しみ
3:54
10.
"Life or Death"
Life or Death
3:16
11.
"Game Over"
Game Over
0:42
12.
"Margulis"
Margulis
4:29
13.
"Followed Space Shuttle"
追われる宇宙艇
3:43
14.
"Relief"
Relief
2:47
15.
"Everyday"
日常
1:54
16.
"U.M.N. MODE"
U.M.N.Mode
2:39
17.
"Durandal"
Durandal
2:33
18.
"Invasion Inside an Enemy Ship"
敵艦内への侵攻
0:41
19.
"Kookai Foundation"
Kookai Foundation
1:58
20.
"Anxiety"
不安
4:08
21.
"Panic"
Panic
2:27
22.
"Song of Nephilim"
Song of Nephilim
1:06
23.
"Inner Space"
Inner Space
1:47
24.
"Albedo"
Albedo
3:50
25.
"Proto Merkabah"
Proto Merkabah
5:30
26.
"Last Battle"
Last Battle
5:04
Reception[]
Stuff.
Episode II[]
Details[]
Composed by Yuki Kajiura and Shinji Hosoe, released July 7, 2004 under the label of Victgor Entertainment, re-released February 17, 2005 under the label of Namco/Brady Games with more tracks. Once again, Kousuke Yamashita composed the new tracks for the DS re-release of the game.
Disc 1[]
No.
Title
Length
1.
"in the beginning, there was..."
2:01
2.
"first meeting"
2:48
3.
"Xenosaga II opening theme"
2:33
4.
"assault"
3:41
5.
"strain~Jin"
3:55
6.
"here he comes"
1:58
7.
"fatal fight (Jin & Margulis)"
4:14
8.
"R&D report"
1:51
9.
"chase"
2:39
10.
"surrounded"
2:56
11.
"lamentation"
5:24
12.
"Albedo"
1:59
13.
"communication breakdown"
4:14
14.
"Sakura (theme-piano ver.)"
1:38
15.
"Sakura #2 (theme-simple voc.ver.)"
2:32
16.
"strained"
1:09
17.
"Jr. #2"
1:42
18.
"strained #2~Albedo #2"
3:55
19.
"in the beginning, there was... #2"
2:00
20.
"battle of Elsa"
3:03
21.
"here she comes (KOS-MOS)"
2:38
22.
"battle of Elsa #2"
2:10
23.
"gate out"
3:30
Disc 2[]
No.
Title
Length
1.
"here he comes #2"
3:31
2.
"creeping fear"
2:06
3.
"U-DO~Febronia"
3:48
4.
"final crisis"
2:15
5.
"presentiment~Jr. #3"
3:16
6.
"a field of battle~bitter #2"
2:57
7.
"inside~Sakura #3"
1:25
8.
"I am free"
1:40
9.
"Sakura #4 (theme-gentle strings ver.)"
2:06
10.
"Sweet Song (Xenosaga II ending theme)"
5:33
11.
"Jr."
3:27
12.
"Jr. #4"
2:37
13.
"fatal fight #2"
2:21
14.
"bitter"
2:53
15.
"Nephilim"
1:29
16.
"the image theme of Xenosaga II #piano ver."
3:11
17.
"the image theme of Xenosaga II"
3:24
Reception[]
Stuff.
Episode III[]
Details[]
Composed by Yuki Kajiura, released July 12, 2006 under the label of Victor Entertainment.
Disc 1[]
No.
Title
Length
1.
"a prelude to the tragedy"
2:00
2.
"fallout"
2:03
3.
"we've got to believe in something"
3:06
4.
"a dark omen"
2:27
5.
"forgotten sanctuary"
2:26
6.
"creeping into"
2:15
7.
"the battle of your soul"
3:07
8.
"rolling down the U.M.N."
2:07
9.
"in a limestone cave"
2:17
10.
"inferno"
1:54
11.
"on our ways"
2:36
12.
"a new world"
2:11
13.
"T-elos"
2:22
14.
"the Miltia incidents"
3:05
15.
"Febronia"
2:51
16.
"promised pain"
3:07
17.
"mother, I miss you"
2:21
18.
"fate"
2:11
19.
"Zarathustra dangeon"
2:17
20.
"shifting territories"
3:21
21.
"hepatica#2"
1:42
22.
"the harsh truth"
2:08
23.
"to the last place"
1:53
Disc 2[]
No.
Title
Length
1.
"hepatica (KOS-MOS)"
5:14
2.
"battleland"
3:34
3.
"a memory of a tragedy"
1:40
4.
"testament"
3:44
5.
"survive"
3:08
6.
"T-elos#2"
2:12
7.
"she's coming back"
1:57
8.
"when the grief lets you go"
2:33
9.
"godsibb"
3:23
10.
"Febronia#2"
2:13
11.
"crisis coming"
2:50
12.
"a new world#2"
1:55
13.
"outrageous"
2:41
14.
"when the grief lets you go #2"
3:22
15.
"I love you, sincerely"
3:32
16.
"hepatica#3~I believe in you"
7:52
17.
"maybe tomorrow~ending medley"
7:43
Reception[]
Xenosaga: The Animation[]
Details[]
Re-uses some tracks from the Episode I and II soundtracks, and new ones composed by Kousuke Yamashita. Released March 23, 2005 under the label of Columbia Records.