Sol Invictus

Here is my obligatory Christmas piece of the year! This is an original piece loosely based on some old Christmas carols. Sol Invictus was a Roman holiday, which celebrated the birth of the "Invincible sun". It was celebrated on December 25th, and eventually turned into Christmas.
So basically, Sol Invictus is a beta version of Christmas.

I tried my best to make the playback sound good with both Flat's default and Musescore's audio. I swapped out some of the instruments I used on Flat with different ones on Musescore (Oboe to English Horn and Music Box to Harp).
I am still very new to Musescore audio so any advice is welcome!