what's reallly interesting about this video is how sonic made it. Alot of OP amvs now adays are just clips with music, but what sonic does here is time the music with the clips when there are impacts in the clips the music does a DON. It's suprising mor epople dont make amvs like this
Yeah, having a near five minute-long track for an opening that would take several months for an orchestra to learn JUST for an anime would be pretty impressive. /sarcasm