I did some looking.  Try www.pffv.org for the Professional Firefighters Assoc.  It's the people who do the concerts.  Good concerts too.

One funny (funny as in "speaks of corporate greed") note, their concerts are now at Memorial Auditorium in Burlington to "keep the ticket prices affordable."  When Sammy Kershaw played at the fairgrounds he wasn't selling any t-shitrs, etc. becasue he said at the end of his concert when it was too late for them to "pull the plug" on him that the fairgrounds demanded $10 from him for each shirt he sold.  He said he wouldn't jack his prices up to pay their graft and instead sold none in protest.

The CV fairgrounds evidently can't be content with being about the only large venue in the area, they have to be overly greedy as well, even to charities!