Answer:
He played on a keyboard for the rolling stones. Hope this helps :)
During the classical period, public concerts were frequently held in <span>B. theaters or halls normally used for other purposes.
These theaters and halls were used for the purpose of plays mostly, but they were repurposed at the time to include musical exhibitions as well. The other options are incorrect because they do not represent the locations where public concerts were held. </span><span /><span>
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