The most successful black performers of the '60s, the Supremes for a time rivaled even the Beatles in terms of red-hot commercial appeal, reeling off five number one singles in a row at one point. Critical revisionism has tended to undervalue the Supremes' accomplishments, categorizing their work as more lightweight than the best soul stars' (or even the best Motown stars'), and viewing them as a tool for Berry Gordy's crossover aspirations. There's no question that there was about as much pop as soul in the Supremes' hits, that even some of their biggest hits could sound form...