I have come across the concert debate a few times on the brum reddit page and promoters/organisers have popped up saying that it is common knowledge that Birmingham is a difficult place to sell tickets so some artists just avoid it. I think this is in relation to not global megastars but I always find it interesting. Most people seem to think in relation to the big artists that we're avoided a bit more because Manchester covers the North, London the South, and they think people in-between can just travel to either. Shit for us, like, but good for your Tottenham's.