Rumours abound that David Bowie is among the stars due to make a surprise appearance at this year's Glastonbury Festival.
As the first festival-goers pick up their wellies and start making their way down to Somerset after a year without the world's biggest Festival, bookies are offering plenty of odds as to what musicians will be turning up.
Are Bowie fans' dreams to come true?
The Rolling Stones are Sunday's headline act, and the veteran rockers have form when it comes to inviting unannounced guests to share the stage.
Bookies William Hill are offering different odds on star performers, with the most likely being Jeff Beck, currently on tour in the UK, at odds of 4/7. The Boss Bruce Springsteen is similarly well placed to appear, with odds of 11/10. Bowie is an outside hope of sharing the stage with Sir Mick, possibly to reprise their 1985 hit 'Dancing in the Street'. Odds of this star pairing sharing a mike are 10/1.
However, they evidently feel it's more likely that Bowie will appear for his own set, with odds of 6/1, following the enigmatic icon's recent surprise album release.
"Every festival around the world this year have been plagued by rumours that Bowie will play a secret set and with odds of 6/1, it looks likely that he may wait for the biggest stage of all, Glastonbury, to do so," said William Hill spokesman Joe Crilly.
Rolling Stones are headlining - who they will be inviting to share the stage?
WH believes it more likely, however, that Daft Punk, also with a new album, will present their own DJ set, and Liam Gallagher's Beady Eye will appear.
And if you're really feeling ready for an outside bet, you can cross your fingers for a One Direction appearance, although at 100/1, it seems unlikely.