Boss Theme Idea

Thought I'd change it up a little and try a band style theme.

Let me know your thoughts and criticisms. 

The chromatic ending in your first runs up I found a little bit out of character. You could have also used a couple more borrowed tones to build up more intensity. I found the whole thing's arc more like that of a final level before the boss, actually. Boss themes I feel are more memorable and either high energy or intentionally drawling. This wasn't really either of those. 
That being said, good job on the whole.