Jack Antonoff Reveals How He Wrote "New Year's Day" with Taylor Swift

Jack Antonoff shares his writing process and explains why he wasn't nervous writing a song with Taylor Swift.

Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN

Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c
Get more Jimmy Fallon:
Follow Jimmy:   / jimmyfallon  
Like Jimmy:   / jimmyfallon  

Get more The Tonight Show Starring Jimmy Fallon:
Follow The Tonight Show:   / fallontonight  
Like The Tonight Show:   / fallontonight  
The Tonight Show Tumblr:   / fallontonight  

Get more NBC:
NBC YouTube: http://bit.ly/1dM1qBH
Like NBC:   / nbc  
Follow NBC:   / nbc  
NBC Tumblr:   / nbctv  

The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.

Jack Antonoff Reveals How He Wrote "New Year's Day" with Taylor Swift
   / fallontonight