William Adams, known professionally as will.i.am, is an American rapper, singer, songwriter, record producer, DJ, actor and television personality. He is the founding and lead member of the hip hop group The Black Eyed Peas. As a solo artist, will.i.am has released four solo albums, beginning with Lost Change, released in 2001 through Atlantic Records. His second solo outing, Must B 21, was released on September 23, 2003. The track "Go!" was regularly used as the theme for the NBA Live 2005 and Madden NFL 2005 seasons. The third album, Songs About Girls, was released on September 25, 2007. He released his fourth studio album, #willpower, in 2013. As a music producer, will.i.am has produced music for other artists including Cheryl, Michael Jackson, Justin Bieber, Kesha, Britney Spears, Miley Cyrus, David Guetta, U2, Rihanna, Lady Gaga, Usher, Justin Timberlake, A. R. Rahman, Nicki Minaj, 2NE1, and Baby Kaely.