American female vocal soul sister-trio formed in 1968, Chicago, Illinois. Earlier known as artist. They released their two first albums at Stax, produced by Isaac Hayes and David Porter. They switched to Columbia in the mid 70's. Their association with Earth, Wind & Fire's Maurice White brought them at the top of the charts with "Best Of My Love". They had big success as well with "Boogie Wonderland" sang with Earth, Wind & Fire. They released ten albums between 1971 - 1985.
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