Christina Aguilera was on The Tonight Show starring Jimmy Fallon on Monday night, January 23rd as part of the promotional tour promoting The Voice on NBC. While she was there, she and Jimmy Fallon played the wheel of musical impressions. If you ever wanted to hear what it would sound like with Cher singing the Folger's theme song, or Britney Spears singing "This Little Piggy Went to Market", you have to watch this video! Christina can really impersonate these singers!