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Well…it’s all come down to this.

Tonight, The Voice embarks upon its final night of blind auditions.

As of right now, the coaches each have 10 singers on their teams and need 2 more a piece to round it out.

Carson was kind enough to give us a preview of what’s going down tonight and it includes a surprise duet between one of the contestants and Christina Aguilera!

We’re used to the coaches sitting in their chairs, praising all the contestants who give it their all, but one singer had Xtina literally jumping out of her seat.

Sera Hill’s performance of [lastfm link_type="artist_info"]Mary J. Blige[/lastfm]‘s “I’m Going Down” was so moving, Christina couldn’t help but join in:

And if that weren’t exciting enough, listen to what else Carson shared about tonight’s upcoming episode:

Next week, it’s on to the battle rounds, where the singers will compete against each other for a spot in the finals!

• Are you excited to see Christina’s impromptu performance tonight? Share with us your thoughts in the comments section!