When these unkempt upstarts first burst onto the indie scene, all hair and sweat and riffs, they were vying with The Strokes and The White Stripes for airplay. Six years, millions of records sold and some serious hair trimming later, Kings of Leon have the credentials to usurp U2 as biggest band on the planet. Come Around Sundown eschews the raw garage energy of their debut for slickly produced, country-inflected rock n roll that owes more to the Eagles than it does The Sonics. And if you listen carefully during the plethora of reflective, lighters-aloft rock ballads, you can almost hear the satisfying sound of Bono’s knees quivering.