Born in legendary producer/engineer Rick Rubin's NYU dorm room in 1984, Def Jam Records began its meteoric rise to fame releasing some of the most important music in the history of hip-hop. Two of the label's integral behind-the-scenes personalities, Cey Adams and Bill Adler, have recently teamed up to release a new book on the history of the label, called "Def Jam Recordings: The First 25 Years Of The Last Great Record Label."