Berry Gordy, founder of Motown.

Rock and roll historian Ed Ward profiles Smokey Robinson.

Otis Williams was the founder of The Temptations, whose smooth five-part harmonies and synchronized dance steps made them one of the hottest of Motown's super groups. Their hits included "My Girl," "Just My Imagination," and "Pappa Was a Rolling Stone."

Gladys Knight has a new solo recording out earlier this year, “At Last” (Uni/MCA). Knight began her singing career at age 4. Since that modest start, she went on to lead one of the most successful vocal soul groups in America, "Gladys Knight and The Pips." The group stayed together for 39 years before disbanding.Among, the group's most notable songs include: "I Heard It Through The Grapevine," "Neither One of Us," and Midnight Train to Georgia." Knight then launched a solo career.

Martha Reeves is the lead singer of Martha and the Vandellas, the Motown group which made it big in the 60's with such hits as "Nowhere to Run," "Heat Wave," and "Dancing in the Street." Her autobiography, "Dancing in the Street: Confessions of a Motown Diva," was published in 1994. The book is about her career at the height of Motown music's popularity, and about her conflicts with other Motown singers and managers.