New Music: Taylor Swift - I Knew You Were Trouble.

Buy Taylor Swift - "I Knew You Were Trouble." [Single] - HERE

Taylor Swift has released the third promotional track "I Knew You Were Trouble", its apart of her iTunes Countdown campaign for her upcoming fourth studio album "Red". The album is set to hit stores October 22nd via Big Machine Records.

The track was produced by Max Martin and Shellback. It's an catchy pop/rock track, with some dubstep breaks in it.

The single is available to purchase on iTunes now.

Listen to the track, after the jump.