Where was Lindsey Stirling 's music video filmed ?
Stirling 's performances were dubbed " electrifying " by the judges , and won the acclaim of the audience , but after she attempted to step up the dance level in her quarter - final performance , judge Piers Morgan told her : " You 're not untalented , but you 're not good enough to get away with flying through the air and trying to play the violin at the same time . "