Robert - the 4 chaps and the piano do it for free - they just love the exposure and the chance to rub shoulders with the stars

I always watch the reaction of the guests as they are serenaded on stage by 4 gay men!
As far as JR himself goes, I know what Marian means about how he can be vulgar, and very often there is no need for it. Its all designed to appeal to the Friday 'night after the pub crowd' I suppose. but he does get some terrific guests on!