Somewhere in a dark corner of Seattle, Chris Kornelis is weeping. Kings of Leon has just announced that they’ve cancelled their entire U.S. tour. The reason? Lead singer Caleb Followill is too sick to perform. Here’s the official word from the tour’s promoter, Live Nation:We are so sorry to say Kings of Leon are cancelling their entire US tour due to Caleb Followill suffering from vocal issues and exhaustion. The band is devastated, but in order to give their fans the shows they deserve, they need to take this break. Unfortunately, the US dates cannot be rescheduled due to the band’s international tour schedule. Tickets will be refunded at point of purchase. Tickets purchased online or via phones will be automatically refunded. The band will resume touring in Canada at the Rogers Center in Vancouver, BC, on September 28th. That show was originally scheduled for September 14th.So, yes, that includes September 12 at the KeyArena, where KOL were scheduled to perform with Band of Horses. We’ll let you know as soon as we do about a reschedule date. Follow us on Facebook and Twitter.