Singer makes emotional return to the stage with intimate gig at London's Roundhouse
'Applause' singer also criticises Russia
Singer says show will be a 'more intimate experience'
Singer is polishing 'ARTPOP' material ahead of comeback gig at London's Roundhouse on Sunday (September 1)
Singer is preparing for her comeback gig at London's Roundhouse on Sunday (September 1)
Singer thwacks drums on new song
Singer will open this year's iTunes Festival with a performance at London's Roundhouse on September 1
But the singer doesn't say whether the new video will feature a second appearance from Beyonce
Track is the first single from Gaga's 'ARTPOP' album
Hilton has since released a statement claiming Gaga's accusations are 'utterly false' and 'defamatory'