Included with the Japanese special edition of the game for PS4 and Switch.

Notes from Parent Album:
All Music by Falcom Sound Team jdk (Hayato Sonoda, Takahiro Unisuga, Ryo Takeshita), with outsourced work by Yukihiro Jindo.

Composer breakdown leaked by an anonymous user with ties to Falcom: https://www65.atwiki.jp/falcom_staff/pages/141.html

Composition:
Hayato Sonoda (Disc 1: 1, 6)
Takahiro Unisuga (Disc 1: 8, 10, 15 / Disc 2: 5, 13, 14)
Ryo Takeshita (Disc 1: 3, 9, 11, 17, 18 / Disc 2: 1, 4, 6, 7, 17, 18)

Arrangement:
Hayato Sonoda (Disc 1: 4, 7, 12, 14, 19 / Disc 2: 9, 11)
Ryo Takeshita (Disc 1: 13, 16 / Disc 2: 3, 8)
Yukihiro Jindo (contractor) (Disc 1: 2, 3, 5 / Disc 2: 2, 10, 12, 15, 16, 18)

Notes:
• Jindo's orchestral arrangements use themes and motifs of various Ys I&II tracks by Yuzo Koshiro, D2-15 and D2-16 are based upon Sonoda's D1-1.
• D1-4 is a new composition for Ys Eternal (1997), its real composer remains still unknown.
• D1-7, D1-12~14, D1-16, D2-3 and D2-8~10 were originally composed by Yuzo Koshiro for Ys I&II.
• D1-19 and D2-11 are arrangements of tracks from Ys II by Mieko Ishikawa and Hideya Nagata respectively.

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Original album credits from the booklet:

D1-2,3,5/D2-2,10,12,15,16,18
Arrangement: Yukihiro Jindo
Violin: Akiko Nagano, Yoko Kumazawa
Guitar: Masaru Teramae
Narration & Lyrics: Ayako Shibazaki
Recording: Kazuhiro Miyasaka (PRESSTONE)