William Adams (born March 15, 1975), known by his stage name as will.i.am, is an American rapper, singer-songwriter, entrepreneur, voice actor, actor, DJ, record producer, and philanthropist. He is known to be part of the band, Black Eyed Peas, and his songs such as "Scream & Shout" with Britney Spears and "OMG" with Usher.
He co-wrote the single, "Crazy Kids", as well as writing his own verse for the song. It was not featured on the album, but it was included in the official single.