I write as one of the twenty fans who were lucky enough to win the extras casting competition. In my three decades on this planet, I've never won a SINGLE competition, so to get the call saying I'd won this one was beyond thrilling! We were asked to arrive at Abbey Road studios for 9am the next day, which just made it all doubly exciting - not only was it to be PAUL, but it was Paul AT ABBEY ROAD! The brief was to dress in something 'cool, modern or trendy'. I am possibly the least 'cool' person in existence, so goodness knows how I got picked. I need not go into the sheer level of excitement of walking into the front door of the studio and down the stairs to the canteen, which was to be our holding area for most of the day. Just incredible. In addition to the fan competition winners (all of whom were absolutely lovely), there were another 40 or so hired agency extras, who looked at the 20 fans' near-hysteria with wry amusement. We were given a lyric sheet to "Queenie Eye", told to familiarise ourselves with the song, and sat and.. waited. For NINE WHOLE HOURS. Meanwhile, the paid actors and various others got pulled out and taken off for filming, while the rest of us got more and more agitated about whether we'd ever actually get to do anything at all. The crew and the Abbey Road canteen staff were all lovely, and kept us fed and watered - but as the hours wore by it was mightily nerve-wracking, and we began to wonder if we'd ever get used, or whether it was all in vain. If nothing else, we told ourselves, at least we'd get to say we'd spent a day in the Abbey Road canteen, surrounded by framed pictures of the boys sitting around with a brew in the very same spot! Various recognisable members of Paul's family and entourage were hanging around - the radiant Mary McCartney, the focused-as-ever John Hammel, and the very dapper Giles Martin (swoon!). And by nipping along the corridor to "go to the loo" (i.e. explore, obviously!), I ended up bumping into all manner of people, such as Meryl Streep, Gary Barlow, Kate Moss and Tom Ford. Rumours were also circulating that Johnny Depp, Jude Law, Jeremy Irons and Alice Eve had been there the day before. But honestly, who cares about Hollywood fodder like that when Paul's in the equation?! Finally, at about 6pm, all the extras were summoned into Studio 2. STUDIO 2! The holiest of holies! It really is like stepping into a time capsule - that familiar parquet flooring, the acoustic baffles on the walls, the control room steps - WOW. So overcome by all this was I that it took me a moment to realise that the subtle tinkling coming from the piano was none other than Paul himself, who was sitting there, casually jamming away. We were all spaced out around the studio - some lounging on the rugs, some perching on the control room steps, some standing up on flight cases. They then basically did about 5 takes of everyone dancing away to the song, with Paul at the piano, followed by close-ups of various featured actors (such as some long-haired pagan types, a group of urban youths, etc). Paul, looking healthy and happy in blue, and was wonderfully relaxed and chatty throughout. To witness him sitting there, 'thinking out loud' on the piano between takes - IN ABBEY ROAD STUDIO 2 - was, without one of the highlights of my entire life. He broke into the odd jazz standard, a bit of Babyface, and a chorus of Lady Madonna. Whadda man. A Hofner bass was propped up on a stand behind him. I let my mind ring with all the fly-on-the-wall studio chatter from back in the day, and it was as if the past fifty years just drifted away. Magical. And to top it all off, Peter Blake was sitting on a chair just behind me! What an absolute honour to be part of such an incredible day. I doubt you'll even be able to see the back of my head or edge of my foot in the background of the finished video, but I care not. I've spent fifteen years doing the whole overnight queuing at his signings and camping out for a spot in the front row at his concerts thing, and none of it tops last night. I made my way home - after an hour of manic dancing under baking studio lights - convinced that life just could not get any better. [N.B. Just because I don't want to get into any trouble, I should make it clear that although we all signed release forms, which I believe contained confidentiality clauses, we weren't given copies for our reference so I can't be entirely sure what I am or am not permitted to reveal. There was definitely a ban on social networking via Twitter, Facebook, email or text on the day itself, but a crew member made a reference to it being OK to share afterwards. That said, if I'm breaking any rules, I'll obviously be more than happy to remove this post at the request of the production company!]