Taylor Swift Joined By Camila Cabello and Halsey During AMA Performance Swift brought out the two stars for her greatest hits medley at the American Music Awards. She marked being honored as Artist of the Decade by performing a medley of her hits and kicked off her short set with one of her new tracks, 'The Man.' After performing 'Love Story', 'I Knew You Were Trouble' and 'Blank Space', the singer then introduced her pop star pals, who joined her to sing
'Shake It Off'. Taylor Swift, at AMAs Taylor had been introduced to the stage by legendary singer/songwriter Carole King. King predicted "the best is yet to come" for the star, as she showed a highlight reel of Swift's career.