Cancelled Festival - Artist Damages?

News that this year’s Langerado Festival in Miami, Florida, was canceled due to "sluggish ticket sales" got OTCS thinking...when an artist agrees to perform at a festival, and the festival is thereafter cancelled, is the artist entitled to any damages? What are the terms of the performance agreement? Does it include a liquidated damages clause?

Last year OTCS contemplated that the over-saturation of festivals might lead to the inclusion of "exclusivity" clauses in festival agreements; in this year's economy, might an artist now demand a liquidated damages clause?