<http://webisa.webdatacommons.org/423948084>	<http://www.w3.org/ns/prov#value>	"He joined Duke in The Variations, and Duke introduced him to the work of such musicians as Chuck Berry and Muddy Waters." .
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<http://webisa.webdatacommons.org/423948084>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<johnniejohnsonbluesandjazz.com> .