In advance of his 21-gig London club tour this summer (which sold out all 140,000 seats in 20 minutues), Prince is playing a series of secret gigs around town to make it up to any perspicacious megafans that might not have have nabbed tickets in time. This video comes from an unannounced gig he played at the Camden venue KoKo. According to ThisIsLondon.co.uk, the Musical Marvel Midget took the opportunity to praise Amy Winehouse, and was even kissed and knocked down by a fan who lept onstage.