It's just Hans Zimmer, but yeah.
I mean, he may be the Man, but he's not ZimmerMan.
First post updated with link to HerraTohtori's stuff. He got a beautiful shot with a Slammer, better than I've ever managed. It's like an Inferno missile that actually works!
First of all, this trailer is my first contact with this mod. And it looks really amazing! All you need is some good voice acting and it will be great.
Oh, and I'm definitely in love with that vulcan cannon.
The sound, the look, this gun perfect
Actually, all weapons look great (I still prefer longer trails for missiles but that's the only exception).
BTW, did I heard some King Arthur music in the background? 
Hey Harpoon. Glad to hear you liked it. Voice acting is probably not going to happen just because of the sheer amount of dialogue WiH has, but we have a voice acted version of Blue Planet: Age of Aquarius almost done. Have you played that one?
If you like the Vulcan you'll love the Balor from AoA.