"Once a Temptation, always a Temptation" might have been the motto for explosive vocalist Dennis Edwards, who joined, left, and rejoined the group three times. Edwards was born in Birmingham, but his family moved to Detroit when he was seven. As a high-school student, Edwards sang with the Crowns of Joy gospel group, then formed a soul-jazz band called Dennis Edwards & the Firebirds, inspired by organist Richard "Groove" Holmes. Motown bass legend James Jamerson heard Edwards singing one night and suggested he audition. They needed a lead singer quickly for the Contours, and h...