1) A band that initially couldn't have been more soporifically homogeneous. Four youngsters of the same pigmentation, gender, sexual orientation, and socio-economic background. It was only after the band broke up and began solo careers that they became interesting: one became an atheistic revolutionary, another an apolitical crooner, another a holy roller, and the fourth a happy-time dickie.
2) An all-white band almost singularly unique for its gender balance and equity, with two men and two women. The lead singer was a she, and the primary songwriter a he.
3) The first major american band to have an integrated, multi-gender lineup, with three black men, two black women, and a couple o' white guys. The women weren't just backup singers either - they played instruments and sang an occasional lead vocal.
4) Not a grand symbol of equality in diversity, as this quartet's singer/songwriter was just as white and male (and pretty nerdy) as two of his bandmates...but they're worthy of mention for that white chick on bass.
5) Founded at a time when black bands and white bands couldn't have been more segregated, this unit was universally embraced for the brilliance of its black singer/songwriter/guitarist...yet many people never realized that the other members of the trio were white.
6) An oh-so-rare rock duo - one he, and one she. She played drums and sang an occasional vocal, he did most everything else.
7) Another XX/XY duo, and this one more balanced - he did most of the songwriting and she did most of the vocals, but they both did both.
8) This quintet's most fascinating feature is that two of their three lead singer/songwriters were women...yet they never became identified as a "girl band" in the public consciousness. Why? Because they took their name from their all-male rhythm section? They're also the only major band in pop history comprised of brits and yanks.
2) The Mamas and the Papas
3) Sly and the Family Stone
4) Talking Heads
5) The Jimi Hendrix Experience
6) The White Stripes
7) Ike & Tina Turner
8) Fleetwood Mac