Selena Gomez Reacts to Wizards of Waverly Place Theme Inspiring Billie Eilish's "Bad Guy"

Selena Gomez reacts to finding out the Wizards of Waverly Place theme song inspired Billie Eilish's "Bad Guy," shares the meaning behind her Rare album title and teases her favorite unreleased track that didn't make the cut. 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 The Tonight Show Starring Jimmy Fallon: https://www.nbc.com/the-tonight-show JIMMY FALLON ON SOCIAL Follow Jimmy:   / jimmyfallon   Like Jimmy:   / jimmyfallon   Follow Jimmy:   / jimmyfallon   THE TONIGHT SHOW ON SOCIAL Follow The Tonight Show:   / fallontonight   Like The Tonight Show:   / fallontonight   Follow The Tonight Show:   / fallontonight   Tonight Show Tumblr:   / fallontonight   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. GET MORE NBC NBC YouTube: http://bit.ly/1dM1qBH Like NBC:   / nbc   Follow NBC:   / nbc   NBC Instagram:   / nbc   NBC Tumblr:   / nbctv   Selena Gomez Reacts to Wizards of Waverly Place Theme Inspiring Billie Eilish's "Bad Guy"    / fallontonight   #FallonTonight #SelenaGomez #JimmyFallon