Christina Aguilera

After struggling in his last performance, aspiring country singer Paul Jolley sang the Christina Aguilera/Blake Shelton song 'Just a Fool' on 'American Idol' on Wednesday night (March 6), earning a mixed reaction from the judges for the second time in a row.

Blake Shelton teamed up with his fellow 'The Voice' coach Christina Aguilera for a live duet on her song 'Just a Fool' on tonight's performance (Nov. 19) episode of 'the show. The twosome may be embroiled in the thick of the competition and at odds over wanting their respective team members to win the whole shebang, but when they stepped onto the stage and into their singer roles, they were on the

'The Voice' judge and pop star Christina Aguilera recently previewed tracks from her latest album, 'Lotus,' including a soaring, passionate ballad titled 'Just a Fool' with fellow reality show coach Blake Shelton.

The coaches on 'The Voice' are now like family, and their onscreen "rapport" has filtered into real life, in both personal and professional capacities. Blake Shelton and Adam Levine have enjoyed a very public bromance, while Levine and Christina Aguilera teamed up for his band Maroon 5's mega smash hit 'Moves Like Jagger.' Now, Aguilera, a certified pop diva, has recruited both Shelton a