The Who are to give the first public tasting of their own brand of limited edition champagne ahead of their headline slot at the Isle of Wight Festival.
The bubbly, named Champagne Cuvee Roger Daltrey, has been produced by Eminent Life to toast the band's 50th anniversary and will sell for £95 for a 75cl bottle.
A contribution from the sale will go towards the Teenage Cancer Trust.
Roger said: "I am very excited to have this opportunity to express my passion for champagne through this limited edition cuvee. I hope you enjoy it as much as I do."
A festival spokeswoman said: "This will be the first time the champagne has been tasted by anyone other than the winemaker and Roger Daltrey."
Along with the champagne, a signed ice bucket has been produced in a limited run of 499 to sell at £650 each.
Meanwhile, festival-goers partied through a few light rain showers during an afternoon that saw Busted and Everything Everything take to the main stage.
During her act, Jess Glynne performed a tribute to Prince by singing his song "I Feel For You" which was made famous by Chaka Khan.
One festival-goer, Jason Hargraves, 51, from Norwich, surprised his wife Juliet for her 50th birthday with "glamping" tickets to see Queen.
Jason, a father of two girls, said: "It's both of our first time at any big festival - it was an ambition to be here."
Juliet said: "I had no idea I was coming here so it was a great surprise. A lovely surprise."
DJ Lemon, from Southsea, Hampshire, who will perform as Its a Sin in the Hipshaker tent on Sunday, said: "The atmosphere was insane in there last night, Rhythm Of The 90s was huge, just crazy vibes."
The Friday headline slot was shared by Welsh rockers Stereophonics followed by Faithless ahead of Richard Ashcroft performing tracks from his new album These People as "special guest" to The Who on Saturday night.
The festival, held at Seaclose Park, Newport, will be concluded by Queen on Sunday night.
Original Queen members Brian May and Roger Taylor, who are celebrating the 40th anniversary of Bohemian Rhapsody, will perform their only UK show of the year alongside American vocalist Adam Lambert who has sold 2.5 million albums worldwide after coming runner-up of American Idol in 2009.
Thousands of music fans travelled by ferry across to the island for the festival and filled up both the general campsites as well as the various glamping options which include tents in the shape of playing cards and giant cubes offered by Tangerine Fields.
Since the Isle of Wight Festival relaunched in 2002, it has featured headline acts from some of the world's biggest stars including David Bowie, Coldplay, The Rolling Stones, Sir Paul McCartney, Blur, Fleetwood Mac and the Foo Fighters.