Swift removes back catalogue after withholding new album '1989' from service
US singer will headline British Summertime Festival in London's Hyde Park
US artist's fifth LP becomes the fastest-selling album of 2014 by a female artist.
The feminist icon said she always knew the pair would be friends
Track taken from Swift's new album '1989'
The singer shares song names from her new album ahead of its release next week
It is thought to be taken from the singer's third single from '1989'
The song follows on from Swift's recent single 'Shake It Off' and precedes her new album '1989'
Swift claims that male pop singers are treated differently to women