First and foremost, ten tracks from Xenoblade Chronicles 3 have been added, as well as one from Xenoblade Chronicles X: Definitive Edition! The changes are as follows:

4 Underground - Tephra Cave -> Malevolent Hollow
9 The Hallow - Agniratha, Mechonis Capital -> Elaice Highway (Night)
11 Underground Hallow - Satorl Marsh (Night) -> Elaice Highway
22 Ocean Day - Eryth Sea -> Erythia Sea
40 Sandstorm - Kingdom of Torna (Night) -> Dannagh Desert
43 Ocean Night - Eryth Sea (Night) -> Erythia Sea (Night)
46 Town Day - Hometown -> Keves Colony
47 Town Night - Hometown (Night) -> Keves Colony (Night)
57 Empress of Light - Driver VS -> Kaleidoscopic Core
70 Otherworld Space - Memory's End -> Don't worry <2XDV> (Instrumental)
91 Shimmer - Cloudkeep

In addition to those, every non-Otherworld track has been remastered with clearer quality while still aiming to be storage-efficient.
Expect another update once the next Terraria update releases.

Added a song that now plays when fighting Deerclops, and the track list has appropriately been updated.