Such great work you're making now, I love this little loop.
The violins are touching, they harmonize perfectly, the chorus is great, and I like the bells, it just adds that epic sounding touch.
Although this song is absolutely wonderful, I'd have to agree with a review below me, I'm not sure if this is necessarily "boss music." But, I can see it as like a victory screen after defeating the boss. Now, if you were going to make this into a boss battle loop, I would say to add some grimey bass (not too much, but you know what I mean) and some hard hitting drums, with some sort of inspiring, yet dark, synth or guitar. Either way, this is a great loop, and nobody could deny that. Just out of curiousity, how much time did you spend on this little tune? Because whatever you did it turned out perfectly, and you should continue doing it!
Wonderful man, just wonderful.