Classical guitar was neither prestigious nor was often played in concert halls until it was revived by Andres Segovia in the mid-twentieth century, having been won over by the instrument's sound despite its relative obscurity.

Classical guitar was neither prestigious nor was often played in concert halls until it was revived by Andres Segovia in the mid-twentieth century, having been won over by the instrument's sound despite its relative obscurity.

Classical guitar was neither prestigious nor played often in concert halls until it was revived by Andres Segovia in the mid-twentieth century, having been won over by the instrument's sound despite its relative obscurity.
Classical guitar was not prestigious and was not often played in concert halls until Andres Segovia revived it in the mid-twentieth century, after he was won over by the sound despite the instrument's relative obscurity.
Classical guitar did not have prestige nor was it performed often in concert halls until its revival by Andres Segovia, who in the mid-twentieth century was won over by the instrument's sound despite its relative obscurity.
Classical guitar was neither prestigious nor was often played in concert halls until Andres Segovia revived it in the mid-twentieth century, when he was won over by the sound of the relatively obscure instrument.

keyword; fix the nor issue, fix modifier to Andres SegoviaC