Music of Xenoblade Chronicles 3

The music of Xenoblade Chronicles 3 consists of an unknown number of tracks, none of which have been officially released as of February 2022. Yasunori Mitsuda, ACE, Manami Kiyota, Kenji Hiramatsu, and Mariam Abounnasr all contributed to composing for the game.

Significance in-universe
Music is relevant to the game's story and lore. The main characters Noah and Mio are off-seers, people who mourn those who died in battle, and both play a flute-like instrument (presumably) as a part of this practise. According to Mitsuda, the flute motif is meaningful to the music as a whole, and the instrument features prominently in the music of the reveal trailer.

Website BGM
The official Japanese website for Xenoblade 3 features a button labelled 'BGM' (an acronym commonly used in Japanese to signify 'background music') which, when pressed, plays a music track. This track is the same one heard at the end of the reveal trailer, and its beginning is played in-universe by Noah at the start of the reveal trailer.