Question: Still Da Baddest is the fourth studio album by American rapper Trina, following the poor chart performance, "I Got a Thang for You" featuring which American singer/songwriter, record producer, business woman, and television personality, and was born in Oakland, California?
Related documents: [0]  [DOC] Still Da Baddest is the fourth studio album by American rapper Trina. It was released on April 1, 2008, by Slip-n-Slide, EMI and DP Entertainment. The album was preceded by the lead single, "Single Again" on November 6, 2007. Following the poor chart performance, "I Got a Thang for You" featuring Keyshia Cole, was released as the album's second single. The album's third and final single "Look Back at Me" featuring Killer Mike, which it was produced by Hard Hat Productions, became a regional hit club record and accompanied by a music video. [END] 
[1]  [DOC] Keyshia Cole (born October 15, 1981) is an American singer/songwriter, record producer, business woman, and television personality. She was born in Oakland, California. Her career began when she met MC Hammer at the age of 12, and later met rapper Tupac Shakur. At the age of 18, she moved to Los Angeles and was later introduced to A&M Records. She released her debut album, "The Way It Is" (2005), which spawned five singles: "Never," "I Changed My Mind," "(I Just Want It) To Be Over," "I Should Have Cheated," and "Love." It was certified gold within 17 weeks, and then platinum just eight weeks later. The album stayed on the charts for over a year, selling over 1.6 million copies. [END] 
Answer: 
Keyshia Cole
Keyshia Cole