Although six 'American Idol' alumni returned to the music competition show, only Sparks and Daughtry saw both the contestants they mentored advance to the next round.
After season 9, rumors speculated about who would replace the sharp-tongued Simon Cowell and what the future of Idol would be. A star-studded new panel was brought in for season 10 to join Randy Jackson, the last remaining original judge. Steven Tyler and
