Connoisseurs of live music will tell you that something is lost when an artist becomes popular enough to perform in an arena. While this may be true at some places, it's certainly not the case at Broomfield's 1STBANK Center, where the sound is pretty well dialed in virtually anywhere you sit. The venue, which sits halfway between Denver and Boulder, hosted a variety of acts in the past twelve months, from Radiohead to Portishead to Kelly Clarkson; the Black Keys will grace its stage at the end of April. At 1STBANK Center, shows of this caliber somehow feel far more intimate than you'd expect.