Tony Bennett/Lady Gaga

Bennett! Gaga! Together on one stage! Yes, the veteran crooner (who's found fame with a new young audience in recent years) teams up with the eccentric pop icon herself for a session in the grand setting of the Albert Hall. Though they may seem an unlikely couple of swingers, the two are well-placed for an evening of sophisticated sing-song, having collaborated on an album of jazz standards by the likes of Duke Ellington and Cole Porter – 'Cheek to Cheek' – earlier this year. They'll be singing plenty of material from the album at tonight's performance, backed by both a big band and an orchestra for extra pizzazz. Proceeds from the show will be donated to children's charity WellChild.