As I listen to this, I feel the urge to make sure there isn't anything on my roof poised to fall on my head... Don't think I've heard a trombone quintet before but this sounds fantastic. Love the flow from the beginning to the almost triumphant middle section to the chaos of the final section before that gorgeous chord you end on. Reminds me a bit of the brass section cutting through in Balada's Gurenica. Nice manifestation of "break the rules".