Christina Aguilera, Blake Shelton Perform "Just a Fool" on The Voice

Cassadee Pope and the rest of the contestants on The Voice belted our some impressive performances Monday in what may have been the show’s best-ever episode.

Kicking it off before the top 10 got started? Superstar coaches Christina Aguilera and Blake Shelton!

The duo premiered their new single, "Just a Fool," and it ruled. Watch their terrific team effort below!

The seemingly odd couple probably would’ve never collaborated if it weren’t for the NBC show, but they sure make you glad it brought them together, right?

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