Included with "The Legend of Nayuta: Boundless Trails Limited Edition" for NSW & PS4, sold exclusively on NIS America's Online Store.

Notes from Parent Album:
A complete version of the soundtrack is included with the NIS America release of The Legend of Nayuta - Boundless Trails.  All deluxe editions include the Digital Soundtrack, and limited editions include a CD version titled Starfall Symphonies.

All Music by Falcom Sound Team jdk (Hayato Sonoda, Takahiro Unisuga, Saki Momiyama), with outsourced work by Noriyuki Kamikura/Yukihiro Jindo and uncredited music from Ryo Takeshita/Masanori Osaki.

Composer breakdown leaked by an anonymous user with ties to Falcom: https://www65.atwiki.jp/falcom_staff/pages/142.html
In addition to this, the bgmtbl.tbl file within the game has composer codes in it, which are mostly consistent with the leaked credits: https://www65.atwiki.jp/falcom_staff/pages/109.html

Composition:
Hayato Sonoda (Disc 1: 3, 5, 9, 12, 13, 14, 18, 19, 27, 33 / Disc 2: 1, 4, 12, 19, 21, 25)
Takahiro Unisuga (Disc 1: 6, 11 / Disc 2: 8, 9, 27)
Saki Momiyama (Disc 1: 1, 2, 4, 7, 8, 15, 17, 20, 21, 23, 25, 26, 28, 29, 30, 32 / Disc 2: 2, 3, 5, 6, 7, 10, 11, 16, 22, 23, 24, 26)
Ryo Takeshita (uncredited) (Disc 1: 22, 24 / Disc 2: 13, 14, 15, 17)
Masanori Osaki (uncredited) (Disc 1: 10, 16 / Disc 2: 18, 20)

Arrangement:
Hayato Sonoda (Disc 1: 25, 32)
Noriyuki Kamikura (contractor) (Disc 1: 1 / Disc 2: 26)
Yukihiro Jindo (contractor) (Disc 2: 24)

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那由多の星の物語 / "Nayuta No Hoshi No Monogatari"
VOCAL: Kanako Kotera
LYRICS: Kanako Kotera
GUITAR: Daisuke Miyazaki
BASS: Atsushi Enomoto
ARRANGEMENT: Noriyuki Kamikura
MIXING ENGINEER: quad (luvtrax)
VOCAL RECORDED: PROCYON STUDIO

那由多の想い / "Nayuta No Omoi"
VOCAL: Kanako Kotera
LYRICS: Hideaki Hamada
VIOLIN: Akiko Nagano
ARRANGEMENT: Yukihiro Jindo
MIXING & MASTERING ENGINEER: Koki Tochio (PRESSTONE)
VOCAL RECORDED: branch studio