Questlove

Ahmir "Questlove" Thompson, the Roots bandleader seen on Late Night With Jimmy Fallon, discusses his book, Soul Train: The Music, Dance, and Style of a Generation, which looks back at the history of the groundbreaking television show that helped launch the careers of Whitney Houston, LL Cool J, Lenny Kravitz, the Beastie Boys, Mariah Carey, and a host of others.