Some of the UK's biggest music stars joined up on Thursday for a big concert to raise money for Children in Need at the Royal Albert Hall in London.
The concert was organised by Gary Barlow from Take That. He performed with the band and later they sang with a special guest, but who would it be?...
It WASN'T Robbie Williams. Instead the boys returned to the stage to sing their tune Smile with Lily Allen. So did Robbie appear at all?
Of course he did! (Although it was known he'd be performing). He shared the stage with Take That for a while, but they didn't sing together.
Robbie did perform on his own though. He later said there were plans to sing with Take That in future, but didn't say where or when.
Lily and Take That weren't the only acts to team up. Snow Patrol performed with X Factor judge and solo star Cheryl Cole.
As did Dizzee Rascal and comedian James Corden. James didn't sing, but he did throw some pretty cool shapes while dancing along with Dizzee.
Cheryl also put on a solo show. Most singers showed off a couple of their own songs, as well as singing with another act too. The show raised £500,000 for the charity.
Leona Lewis performed her cover version of Snow Patrol tune Run and her latest single Happy.
Towards the end of the concert legend Sir Paul McCartney joined lots of other stars on stage to perform some Beatles tunes.
And finally fans did get to see Robbie sing alongside his old pals, hugging Gary Barlow while belting out Hey Jude.