If they are offering tickets at half-price at this stage then I think there is a very real danger that this will not go ahead. I think this year has shown that a number of people have misjudged the Aberdeen music scence. The Northern Lights festival fell through as some had initially suspected it would. When push comes to shove, Aberdeen is a small city with a transient population. Selling out Drummonds etc is one thing, getting a full house at the AECC or Seaton Park is another thing all together.