petshopboys.co.uk

They were there

Pet Shop Boys performed two songs at the Elton John & David Furnish "stag" night party in London on Monday, December 19.
At the conclusion of a 45-minute cabaret, they performed the "Barfly" version of "It's a sin" and then were joined onstage by Jake Shears of the Scissor Sisters for a rendition of the Gloria Gaynor classic, "I am what I am", arranged by Pet Shop Boys with vocals shared by Jake and Neil.
Other performers in the cabaret included Paul O'Grady, Bryan Adams, Ian McKellen, Gary Barlow & Lulu, Eric McCormack (of "Will and Grace"), Janet Street-Porter, Kiki Kokova & Ivan Putrov, Kiki & Herb and Lee Ryan. The party was held in the Soho nightclub, Two Too Much.