Some stars will tell you that they don't like listening to their own music, but Taylor Swift owns up to it.  At least, she owns up to listening to one particular song: her latest hit, "22."

"It's the one that I blast in the car," she laughs. "It's the one that I turn on at the end of a really, long day and it just makes me feel better, and the chorus just kind of slams in.  It's such a big chorus."

Taylor says she wrote that particular "big" chorus "I don't know about you/But I'm feelin' 22" on a plane, on her way to a co-writing session with hit making writers and producers Max Martin and Shellback.

"I walked in and I was so excited about it, and I played it for them and they were like, 'All right. Let's do this!' They loved it, too," Taylor recalls.  "It was really, kind of, an exciting moment for me...[that] they loved it enough to not really change much about it and just to build out from there, and to write the rest of the song."

The Grammy-winning singer also says she enjoys listening to "22" because it's very personal to her: it's the story of her own life, and that of her friends.

"It's just kind of, like, a song about my friends and how we don't know where we're going, we don't know who we are, we don't know about love, we don't about life, we don't know about anything...but we're having so much fun," Taylor  explains.

Even though "22's" still going strong on the charts, rumor has it that Taylor's already selected the next single from her album Red: her duet with Ed Sheeran, "Everything Has