Rising star Taylor Swift's "White Horse," a song from her forthcoming sophomore album, "Fearless," will be featured in the two hour season premier of ABC's "Grey's Anatomy," which will air Sept. 25 at 9 p.m. ET.

"You should've seen tears streaming down my face when I got the phone call that they were going to use that song on 'Grey's,'" Swift tells Billboard. "I have never been that excited.

"This is my life's goal," Swift continues, "to have a song on 'Grey's Anatomy.' My love of 'Grey's Anatomy' has never wavered. It's my longest relationship to date."

She adds, "It's one of the songs that I am really proud of on the record because it's so sparse - it's guitar, piano and cello.

"It talks about falling in love and the fairy tales that you are going to have with this person, and then there is that moment where you realize that it is not going to happen. That moment is the most earth shattering moment."

Swift's album is due Nov. 11 on Big Machine.