OP, sorry this got grossly off topic. I think what you should take from all of this, is come to Denver with an open mind. Take the advice of the locals you meet here, and you will have an amazing time. Do not restrict yourself to where you think you should go. Our aquarium and theme parks pretty much suck. Be flexible, be open, and don't be afraid to go outside of your comfort zone a little. Denver is really an amazing city with all kinds of different cultures melded together in relative harmony.
Music is a huge part of my life and why I love Denver, If you can provide us the dates you are here, I (and Im sure Dan,) would be more than happy to make some local music recommendations based on your tastes.