He also made a guest appearance on Ludacris' single "What Them Girls Like" alongside Sean Garrett.The song peaked at number 17 on the US Hot R&B/Hip-Hop Songs chart, and number eight on the US Hot Rap Songs chart.In November 2007, Brown starred as a video host for St.Jude Children's Research Hospital's Math-A-Thon program. He showed his support by encouraging students to use their math skills to help children with cancer and other catastrophic diseases.Christopher Maurice Brown (born May 5, 1989) is an American singer, songwriter, and actor.Born in Tappahannock, Virginia, he was involved in his church choir and several local talent shows from a young age.
On June 13, 2006, Brown released a DVD entitled Chris Brown's Journey, which shows footage of him traveling in England and Japan, getting ready for his first visit to the Grammy Awards, behind the scenes of his music videos and bloopers.
Brown has made appearances on UPN's One on One and The N's Brandon T. In April 2007, Brown was the opening act for Beyoncé, on the Australian leg of her The Beyoncé Experience tour.
On July 9, 2007, Brown was featured in an episode of MTV's My Super Sweet 16 (for the event, it was retitled: Chris Brown: My Super 18) celebrating his eighteenth birthday in New York City.
Shortly after ending his summer tour with Ne-Yo, Brown quickly began production for his second studio album, Exclusive, which was released in the United States on November 6, 2007.
The album debuted at number four on the US Billboard 200 chart, selling 294,000 copies in its first week, The album's lead single, "Wall to Wall", peaked at number 79 on US Billboard Hot 100 chart, and number 22 on the US Hot R&B/Hip-Hop Songs chart.