Black Keys protégé Jessica Lea Mayfield made her network television debut last week on Late Night With David Letterman playing her new song “Our Hearts Are Wrong.” The singer/songwriter sounds like Lucinda Williams if she fronted Wilco. She met Black Keys frontman Dan Auerbach when she was still in high school. “Dan sent me a MySpace message,” she told Rolling Stone earlier this month. “He was like “Hey, I play in a local band called the Black Keys.'” Auerbach went on to produce both of her albums, and in 2007 she sang on their album Attack And Release.