Woman In R.Kelly Trial Testifies About Threesomes, Def Jam Appoints Jay-Z Successor, And Wale Partners with Imeem To Showcase D.C. In “The Roundup.”

A women who participated in multiple threesome escapades with R.Kelly and the alleged underaged female in the singer's infamous sex tape testified yesterday in court about the sexual encounters. "[The sex tape] looks like it took place around the same time we had our first enounter," Lisa Van Allen testified. "I recognized her body, her face, her hair, her breasts--especially her breasts, because back then, I felt like she was so much bigger than me. And I recognize his face, his bald head, his genitals, his back, everything." Van Allen said the encounters took place between 1998 and 2000, when the girl in question was 14 through 16. [MTV News]

Def Jam executive Shakir Stewart was promoted from his post at sr. vice president of A&R, Def Jam Recordings, to executive vice president of Def Jam Recordings. The move, in essence, anoints Stewart as the replacement to Jay-Z, who served as president of the storied hip-hop label before stepping down from the post in December 2007. Stewart first joined Def Jam in 2004 and was instrumental in bringing Young Jeezy and Rick Ross to the label.

Former Game protege Ya Boy released his latest mixtape, I'm Bout To Murdah This Sh*T, today. The 13-track set features collaborations with Kurupt, Eastwood, among others. The Bay Area rapper's debut album is due this fall.

Imeem online radio is partnering with rap upstart Wale to produce "Keys to the City," a new program set to premier that features artists showcasing their respective cities through a multi-media presentation of their town's sights and sounds. The first episode features the rising Washington D.C. star. Other episodes will include Atlanta, New York, Los Angeles, Seattle, and Philadelphia [Imeem]

A gas container was found on the grounds of 50 Cent's burned down Long Island mansion. A fire blazed the mansion, and the mother of the rapper's child blamed him in the media, now reports say a discarded gas container was discovered near the wreckage. [CBS]