For as much as they seemed like the typical gimmick band, an act formed by two comically mismatched artists adopting a jokey moniker and wearing stage costumes that parodied iconic film duos, Gnarls Barkley obliterated all stereotypes with their 2006 hit “Crazy.” A truly transcendent pop song cut from dark chord changes and a desperately soaring chorus, it was three minutes of bliss that was hailed by Top 40 pop fans and indie hipsters alike. By the end of the year, the song had proven so powerful that everyone from Nelly Furtado to the Raconteurs to Charlotte Church had covered it, and the band had achieved cult status, with auteur producer Danger Mouse and R&B heavyweight Cee-Lo earning a following that crossed all demographic and genre barriers. But that said, St. Elsewhere, their debut album, was a bit of a ...