Hahah, I am definitely no music theory expert, I know the concept of letting strings and woodwinds take their turns and let the other through, but perhaps it works better here because they're both not very busy, and the mandolin carries the brunt of the melody? Speaking of the mandolin, the tremollo it gives are individual notes and not a preset articulation in fact! :) Glad you liked the tubular bells as well hahaha
Thank you for listening! :D