Everyone was given a red kazoo on the way in. I'd never played (if that's the right word) one before and, at first, I was convinced that the thing didn't work. But there's a knack to it that doesn't involve blowing. Led by the Masters of the Kazooniverse, almost 4,000 of us took part in a Guinness World Record -breaking attempt to get the most people playing a kazoo for five minutes. We had two goes at it; first to Flight of the Valkyries and then to The Dambusters theme. What a row! The players were counted and adjudicated and all that. Find out on Friday if we broke the record.Top: Royal Albert Hall, Pimlico, Walthamstow, Highbury
It was a good night all round. Presented by Katie Derham and Basil Brush (a hand-puppet on radio, boom-boom!), we were treated to some really lovely classical music especially from Nicole Bendetti, and Sue Perkins conducting pieces by Elgar and Bernstein. Plus genius comedy from Tim Vine and not-so-genius stuff from Marcus Brigstocke (he'd agree!).
Middle: Covent Garden Camberwell, Holloway, Edmonton
Bottom: Hammersmith, Dalston, Highbury, EC4