 Most of these hits were written and produced by Motown's main songwriting and production team, Holland–Dozier–Holland.At their peak in the mid-1960s, the Supremes rivaled the Beatles in worldwide popularity, and it is said that their success made it possible for future African American R&B and soul musicians to find mainstream success.Florence Ballard, Mary Wilson, Diana Ross, and Betty McGlown, the original group, are all from the Brewster-Douglass public housing project in Detroit.