Their midseason replacements - Shakira and Usher - will be back for Season 6, which will air in midseason 2014, Radar Online reported.

Christina Aguilera
Christina Aguilera. Pic/Santa Banta

Meanwhile Fox is scrambling to revive ‘American Idol’ after record low ratings for Thursday’s finale, with 14.3 million viewers.

Original judge Randy Jackson has already announced his exit and Fox is making yet-to-be detailed format changes.

Last week, ‘The Voice’ narrowly edged out ‘Idol’ in weekly ratings.