The Flaming Lips headlined the first ever Camp Bestival and then declared it "perfect".
The Oklahoma band were so taken by the Dorset festival that they have asked to be its house band.
Singer Wayne Coyne made a spectacular entrance, appearing behind the crowd on the balcony of Lulworth Castle, before sufing over the audience and onto the stage inside an inflatable plastic ball.
The band were in typically colourful form, the stage decked with dressed up dancers as streamers and confetti helped light up their set.
Highlights included 'The Yeah Yeah Yeah Song' and 'Yoshimi Battles The Pink Robots' and the performance capped a great day at the new Bestival spin-off.
Midway through the set Coyne said: "This feels like the perfect evening, we should be the house band here and come back and play every year. We love you and it even looks like the sun is staying around for a beautiful sunset. This is perfect!"
Other performances came from Billy Bragg, Black Kids and DJ Yoda as thousands of fans donned fancy dress outfits to the theme of Alice In Wonderland.
The opening day was headlined by 82-year-old veteran Chuck Berry, who rolled back the years to treat fans to an hour long set of his rock'n'roll classics.
The family festival has attracted more than 13,000 music fans, including 3,000 children, and continues throughout Sunday.