Spoiler alert! Tuesday’s episode of The Voice will feature the next round of the competition: the sing-off. Each judge (Cee Lo, Adam Levine, Blake Shelton and Christina Aguilera) must whittle their eight contestants down to four…and video evidence suggests that not everyone is please with the results.

The video above shows Christina Aguilera contestants Frenchie Davis and Taralynn Ramsey singing it out to Beyonce’s “Single Ladies.” Following the number, Aguilera suffers a “minimal physical attack” from a watching audience member.