Add Idol/Glee

FOX ON THE RUN: While the decline of Idol’s musical clout has been gradual—and though a guest appearance can still spike sales for certain high-profile acts, as happened just last week with Lady Gaga—the show has failed to throw off a career artist since 2006 contestant Chris Daughtry. Kris Allen, last year’s winner, has sold just 300k, though runner-up Adam Lambert has moved 625k, thanks primarily to the Gaga-esque imaging of the androgynous tabloid magnet. The shift adds up to a glass-half-full situation for Sony Music, which releases product pulled from both shows. SME will also release music associated with departing Idol judge Simon Cowell’s X Factor, which makes its U.S. debut next year. (5/13a)