His birth certificate says William Paul Mitchell but you can call him Large Pro (Extra P for short), an architect and master of New York hip-hop who has produced for Nas, A Tribe Called Quest, Big Daddy Kane and too many others to fit in this bio. Now, the producers' producer hits you with Main Source, a brand new collection of 15 tracks that'll have you going, "Why can't they all make shit this good anymore?" The album includes co-labs featuring Big Noyd, AZ, Styles P and many more....