By Laura Ferreiro

Kanye performing in NYC (Photo: Theo Wargo)Leave it to Kanye West to turn an embarrassing moment into a massive onstage tirade. The rap star, who performed at a surprise show at New York's Roseland Ballroom Wednesday night for an Adult Swim Upfront party, took the opportunity to lambast paparazzi and tell the world that he "ain't no motherf---ing celebrity."

During his hour-plus set, West went on a rant for more than three minutes, declaring himself the "worst kinda celebrity" and saying he was fed up with people running up to him with cameras, asking him "dumbass questions, throwing me off my focus and sh-t."

It's likely that a recent incident in which West walked head first into a "Wrong Way" sign when paparazzi were following him and his lady love, Kim Kardashian, in Los Angeles, sparked the tirade.

Beyoncé says she is glad to be back on stage in Antwerp. (YouTube)

"I do whatever I want," Beyoncé belted on stage in Belgium Wednesday night, referencing a lyric from her new single "Grown Woman."

And she means it. Doctors had the superstar cancel a Tuesday concert in Antwerp to treat exhaustion and dehydration, and also advised that she cancel Wednesday's show. She refused.

"Now, my doctors told me not to perform tonight, but there was no way in the world. I just have to say that y'all give me so much inspiration," she told ticket holders inside Antwerp's Sportpaleis.

Photo: Jeffrey MayerTalk about taking it old school. Beats headphones moguls Dr. Dre and Jimmy Iovine are joining forces with the University of Southern California, which was founded in 1880 – but they're not doing it as some sort of history lesson. Rather, they're banking on the future.

The noted hip-hop figures are donating $70 million to create the Jimmy Iovine and Andre Young Academy for Arts, Technology and the Business of Innovation. Starting in the fall of 2014, Trojans will be able to enroll in the four-year program, which offers courses in technology, art, design and marketing.