Included with the game Ys vs. Trails in the Sky: Alternative Saga Collector's Edition:
Limited Run #594 (PS4)
Switch Limited Run #310 (NSW)
PS5 Limited Run #149 (PS5)

Notes from Parent Album:
A first print bonus for both regular and limited editions of the game.

Disc 1: Ys vs. SORA NO KISEKI: Alternative Saga OST
jdk BAND
Vocal : Kanako Kotera (15, 16)
Violin: Akiko Nagano
Guitar : Masaru Teramae / Mikihito Tanaka
Bass : Shuhei Hamasaki / Atsushi Enomoto
Drums : Hidekazu Nishi / Tomohide Kinugasa / Kotarow Hatanaka / Norisuke Yoshikawa

All Music by Falcom Sound Team jdk*
All Music Arrangement: Yukihiro Jindo
Lyrics: Hideaki Hamada
Recording: Kazuhiro Miyasaka (PRESSTONE)
Recording: branch studio

[*from the game credit]

Music and Sounds / Sound Team jdk
Hayato Sonoda
Takahiro Unisuga
Saki Momiyama
Masanori Osaki


Disc 2: Falcom Best Sound Collection -ALL in ALL-
All music by Falcom Sound Team jdk

01
Arrangement: Yukihiro Jindo
Lyrics: Kyo Hifumi
Vocal: Kanako Kotera
Guitar: Masaru Teramae
Bass: Atsushi Enomoto

06
Arrangement: Ryo Yonemitsu

08
Violin: Akiko Nagano
Guitar: Akihiro Goto

17
Arrangement: Tomohiko Kishimoto
Performer: Leone Fredrik Richter

19
Arrangement: Kohei Wada
Chorus: Hiroko Yamawaki, Ayako Shibazaki
Guitar: Kohei Wada
Bass: Kohei Wada

20
Arranged: Kohei Wada
Lyrics: Hideaki Hamada
Vocal: U~mi

Track origins (from the booklet):
1.01 "Ys vs. Sora no Kiseki Alternative Saga" OP
1.02 "Ys vs. Sora no Kiseki Alternative Saga"
1.03 "The Legend of Heroes: A Cagesong of the Ocean" arrangement
1.04 "Ys vs. Sora no Kiseki Alternative Saga"
1.05 "Gurumin" arrangement
1.06 "The Legend of Heroes: Zero no Kiseki"
1.07 Drama CD "Sora no Kiseki - Tita Story ~Tsunagaru Omoi~"
1.08 "The Legend of Heroes II" arrangement
1.09 "Ys 6 -The Ark of Napishtim-" arrangement
1.10 "The Legend of Heroes: White Witch" arrangement
1.11 "The Legend of Heroes: Sora no Kiseki" arrangement
1.12 "The Legend of Heroes: A Tear of Vermilion" arrangement
1.13 "Ys vs. Sora no Kiseki Alternative Saga"
1.14 "Monarch Monarch" arrangement
1.15 Drama CD "Sora no Kiseki - Klose Story ~Tsubasa, Habataku Toki~"
1.16 "Ys 7"
2.01 "ZWEI2" / "ZWEI2 OST"
2.02 "Brandish" / "Brandish -The Dark Revenant- OST"
2.03 "Zwei!!" / "Zwei!! SAV"
2.04 "Gurumin" / "Gurumin OST"
2.05 "Ys" / "MF Ys"
2.06 "Ys 4" / "Perfect Collection Ys 4"
2.07 "Ys -The Oath in Felghana-" / "YsF OST"
2.08 "Ys Origin" / "Ys Origin SAV"
2.09 "Ys 7" / "Ys 7 OST"
2.10 "Sorcerian" / First time on CD
2.11 "Sorcerian" / First time on CD
2.12 "Sorcerian" / First time on CD
2.13 "Sorcerian" / First time on CD
2.14 "Sorcerian" / First time on CD
2.15 "VM JAPAN" / First time on CD
2.16 "VM JAPAN" / First time on CD
2.17 "Legend of Heroes: White Witch" / "Legend of Heroes 1~4 Piano Collection"
2.18 "Legend of Heroes: A Tear of Vermilion" / "Legend of Heroes: A Tear of Vermilion OST"
2.19 "Sora no Kiseki the 3rd" / "Sora no Kiseki FC & SC SAV"
2.20 "Sora no Kiseki FC" / "Sora no Kiseki OST"
2.21 "Dragon Slayer 4" / "Falcom Special Collection Box"