Taylor Swift thrilled the crowd during her concert at the Atlanta Philips Arena Sunday night when she sang a surprise duet with hometown boy T.I.

Swift first signaled the presence of the controversial rapper, who was recently released from a halfway house last month after serving time for prohibition violations, by singing the chorus of his 2008 smash hit ‘Live Your Life.’ After joining Swift onstage, he revved the audience with raps from the song with Swift singing Rihanna‘s famous melody.

Concert goers who attended her first concert were already pumped from the night before when Usher made a guest appearance to perform ‘Yeah!’ with Swift. Previous stops on the tour have featured other high profile guest stars, such as Justin Bieber and Nicki Minaj.

Watch Swift and T.I.’s unlikely duet below.

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