Is Taylor Swift going to put out a rap album soon??

First, the singer covered Eminem's "Lose Yourself" in concert. Now, Sunday night, she did a duet with rapper T.I., who was released from prison in August, on stage in Atlanta.

Swift, 21, and T.I., 31, sang his 2008 hit, "Life Your Life" (Swift did the part originally performed by Rihanna.) She Tweeted, "Singing 'Live Your Life' with TI tonight was unreal. LOUDEST screams from the crowd, 14,000 people, hands in the air- welcome back @Tip!!"

Rappers Nelly and Young Jeezy attended the show, and came backstage to greet Swift.

On Saturday, Swift welcomed Usher to the stage -- the two sang his 2004 smash, "Yeah!" See that video after the jump!