Failed pop stars Failed pop stars "American Idol" reject Pia Toscano is in talks to release a new album after being booted from the talent show Her foray into pop stardom will probably fare better than these non-musical celebs, who couldn't resist attempting a pop career -- often to ear-splitting effect. Kim Kardashian Socialite daughter of a fallen football star's celebrity lawyer Day job: "Keeping Up With the Kardashians" and her new reality show (watch it) Pop attempt: Dance single "Jam Listen to "Jam Kevin Federline Ex-husband and father to the children of a legitimate pop superstar. Day job: Super Bowl commercial jokester and "Celebrity Fit Club" contestant Pop attempt: Album "Playing With Fire" Watch the video for "Lose Control" Heidi Montag Plastic surgery fan and wife of Spencer Pratt Day job: Star of "The Hills" and author of how-to book on achieving fame Pop attempt: Aptly titled album "Super...