Reports suggest Katy Perry is the latest star to lip-sync to a pre-recorded backing track
Katy Perry sparked claims of lip-syncing when a performance of her hit single 'Roar' was out of sync with the song's backing track.
The embarrassing incident, which took place at the NRJ Music Awards in Cannes, forced Katy to halt her performance mid-song. "If you don't mind, we can restart," she told the audience. "What do you think? We had a little problem."