Song found! Composer, children's choir, and professional performance.

"Song of the Stars with intro by Imant Raminsh: Coastal Sound Children's Choir"

~ coastalsoundmusic

https://youtube.com/watch?v=ZSRUtPSfNoA&si=FT70ljZ7h4shlnlH

"I. Songs of the Stars" (by Imant Raminsh)

~ Vancouver Chamber Choir

https://youtube.com/watch?v=dWovOXLiQGo&si=yMDFnYmvawutQq6p