Hey, no worries at all and thanks for the reply. I only mention it because the music is so damn good - I just couldn't hear it with the classical playing over the top. It could be a cognitive thing - I don't know. But just in case it pushes away potential customers. That said, I've purchased it and absolutely love it. It's in the game now and I'll post you a link - you'll be in the credits of course.
One thing I did think would be useful would be some slightly more ambient metal tracks - not driving beats, but more like title menu music, military briefing style music. Every track is a banger, but for a game soundtrack there's moments where something a bit more abstract or mellow would be good.
I ended up taking a particular audio approach in the game where if you pause it, the music slows down and has a "basement" effect, then as soon as you unpause it ramps back up exponentially and straight back into the full bore track. It works really nicely. I would be keen to hear your thoughts if you get a chance to check it out. I'll share link in the next day or so.