1. Favourite expansion for music theme-wise &why?
2. Favourite individual track from games history &why?
Uhh... favorite soundtrack? There's so many... I guess either Invincible or Nightsong
3. Do you think the overall quality of the music in WoW has decreased/increased since vanilla &why?
Definitely hasn't decreased. The Monk Windwalker theme is one of my favorites.
4. What are we to expect from WoD music, do you think?
Well, some soundtracks for it are already out there. It's what I expected, more TBC music.