Awesome video – my vote on commentary vs music would be commentary. As a new thief (just started playing the game earlier this week), hearing your thought process while you’re fighting would definitely be very helpful.
On a somewhat unrelated note, why do you use D/D instead of D/P? I’m currently somewhat undecided between the 2; I’ve tried both but not in PvP/WvW situations yet. Any input would be very much appreciated!