According to the band’s publicist, Kings of Leon drummer Nathan Followill was diagnosed with pneumonia and has been advised by his doctor to rest for several days.   Tickets to the Jan. Alternatively, fans can get a refund at their point of purchase. Kings of Leon performs at Red Rocks Amphitheatre on Sept. 25 show will be honored at the concert’s new date. The southern rock band is scheduled to play a make-up show at the venue on March 11. Cancel those Wednesday night party buses, arena rock fans: Kings of Leon’s Jan. 24, 2014. 25 show at Broomfield’s FirstBank Center has been postponed. Photo by Kirsten Cohen, The Know.