<span>About 12.5 million slaves had been shipped from Africa.
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Answer: True
Explanation: The Art Ensemble of Chicago is an avant-garde jazz group that grew out of the Association for the Advancement of Creative Musicians (AACM) in the 1960s. The ensemble combines many jazz styles, plays many instruments and incorporates various forms of percussion. The musicians wear costumes and face paint while performing to represent all peoples of the world. These characteristics combine to make the ensemble's performances both aural and visual.
Members of what was to later become the Art Ensemble performed together under various band names and all the musicians could play multiple instruments. While playing in Europe in 1969, about five hundred musical instruments were used.