It seems that after walking out on a Houston, Texas concert Kings of Leon's lead singer Caleb Followill is still feeling under the weather. So much so that the band has cancelled the remaining dates of its U.S. tour. The band's website states that Followill is "suffering from vocal issues and exhaustion." Jared Followill also Tweeted that "there are internal sicknesses & problems that have needed to be addressed." The dates in the U.S. will not be rescheduled but the band's Sept. 28 Canada show has not been cancelled.

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