Kylie Minogue and Cheryl Cole are among the stars lined up for guest appearances on BBC1's The Voice as the show battles a ratings slide.
The addition of the two chart stars comes as the programme suffered a further audience blow for its results show on Sunday - losing two million viewers in a week.
On Saturday Britain's Got Talent beat The Voice for the second week in a row.
Kylie Minogue performed an intimate gig at the Manchester Academy this evening.
She performed for "super-fans only" as part of her celebration of being in showbiz for 25 years.
The gig sold out immediately, despite the £79 price tag.
Kylie is fresh from staging four shows of her "Anti-Tour" of her native Australia. She performed to thousands of fans in huge sold-out runs at the Manchester Arena last year.