JAY-Z was infuriated after LIL MAMA jumped onstage while he performed with Alicia Keys at the MTV Video Music Awards - because the performance took weeks to plan.
The diminutive star rushed the stage unexpectedly towards the end of the superstars' rendition of Empire State of Mind at the ceremony earlier this month (Sep09).
Jay-Z continued to perform while shooing Lil Mama away - but the defiant star stood her ground and posed with the duo as the song came to a close.
And now Jay-Z has spoken up to address the invasion, admitting he was "angry" with the interruption after putting in so many hours of preparation.
He tells DJ Angie Martinez, "Me, personally, I would never do that. I would never have the nerve to do that. It's just like, someone's up there performing... We went through rehearsals, we did run-throughs and we worked really hard at the performance to put on a show for people and to interrupt that moment for us, you know, I don't think that was the right thing to do."
The star added that the incident was just as inappropriate as when Kanye West ruined Taylor Swift's acceptance speech earlier in the night: "I actually thought it was the equivalent of what Kanye did to Taylor Swift but nobody really talked about that because I'm not a little sweet girl from the middle of America. And I'm cool with her (Lil Mama) being excited and all that but you have to understand, people put in work to make that performance happen, that took weeks the planning of it. If you look at those screens, we had to go to Yankee Stadium to shoot that live, there was a lot of planning. To disrupt that was out of line. I was a little angry to be honest, but what do I do, fight Lil Mama?"