We're talking about the moment when Beyoncé crashed Solange Knowles' set by surprise. Oh, and if that weren't enough, she had her husband in tow, as Jay Z showed up onstage alongside former rival Nas.
In pop cultural terms, that's kind of like the Tunguska event of hip-hop impacts. Boom.
Beyoncé joined her sister for a dancing duet of Solange’s "Losing You." While shortly after, Jay Z unleashed renditions of "Dead Presidents II" and "Where I’m From" with Nas.
Check out videos of both performances below.