I've been doing something similar recently, and ended up doing exactly what babybell has said.

I contacted each and every band that is on the events list and asked them for permission to use text, images and in some cases, royalty free music, from their websites and promotional material.

In *almost* every case, responses were fast and positive. I did run into a couple of issues where especially photographs were copyrighted by another party.

My point here is that although you are thinking of using laterial from other business's websites, they may publishing material with permission from copyright owners and that permission may not extend to you.