'The Voice': Blake Shelton and Christina Aguilera debut 'Just a Fool' duet

Christina Aguilera continues to use "The Voice" as a platform to promote her new album, "Lotus," but this week we were actually able to enjoy her performance as opposed to just reeling from her bizarre style choices like we did last week. (Seriously, what was that?)

Aguilera opened the show with her new song "Just a Fool," featuring none other than her fellow "The Voice" coach, Blake Shelton. If nothing else, "The Voice" has certainly served to make some surprising musical connections that would never have happened if these artists didn't get to know each other on the show.

Her rocker side meshed well with Shelton's country sensibilities -- and, to our surprise, his voice kept up with hers even as they belted the chorus.

What do you think, fans? Will you be buying this song on iTunes?