I adore the soundtracks for the series, and I think that every game does them spectacularly.

I'll go through favorites for each game: (Haven't played X)

Xenoblade 1:

Main Theme - Classic, So Beautiful

Engage The Enemy - Can't not have this here

Gaur Plains - Super hype for the first area that feels truly open

A Tragic Decision - Such a great boss theme

Shulk and Fiora - Feels like a prettier version of the Main theme

Zanza The Divine - Possibly Best Final Boss Theme for Me

Xenoblade 2:

Gormott - Gaur Plains 2.0

Mor Ardain - Gotta love the upbeat area themes

Indoline Praetorium - Such good use of the choirs here.

Counterattack - Engage the Enemy 2.0

Drifting Soul - Lyrics are kinda dumb honestly, but still great nonetheless.

Xenoblade 3:

You Will Know Our Name Finale - By far the best of these in the series imo.

Night Before Eclipse - That Violin Solo Tho

New Life Is Born - Holy fuck that melody after the buildup is one of the prettiest things I've ever heard.

A Step Away/Where We Belong - I feel like these are my favorite of the vocal tracks in the series, they really make the scenes that they play in so much better than they would have been without them.

What are your guy's Favorites?

Edit: I'm also very interested in knowing why you like these, so please give a short description if you can, thanks!