One of the more unintentionally entertaining parts of Thursday’s American Idol results show was the group number. Despite being choreographed by So You Think You Can Dance favorites Tabitha and Napoleon, it was a hot mess, as usual. While it seemed like the finalists were lip syncing their way through part of a singing competition, the show’s executive producer says they were singing live. On Twitter, executive producer Nigel Lythgoe wrote , “I have no reason to lie to you all! I promise you they all sang live on top of a recorded a backing track with harmonies.” Nigel repeatedly insisted this during his normal battles with fans. Two years ago, the show’s production company responded to similar claims by saying basically what Nigel did: they sing along with pre-recorded backing tracks. That prompted The New York Times’ skeptical reaction: “a subtle assessment might depend on how one defines ‘lip-sync.’” Even if that’s what they’re doing, they do it badly. Thursday, their lips did...