The City of Chicago and its musicians have been on uneasy terms for several years. But “a multifaceted dialogue involving city officials, club owners, record-company and studio owners and music-industry veterans has created the Chicago Music Commission, which aims to raise Chicago’s profile internationally, turn its musical variety into a major tourist attraction and bring millions of additional dollars into city coffers and businesses. One city official called it the Chicago cultural equivalent of the Czech Republic’s “velvet revolution,” in which the communist regime quietly gave way to the coun-try’s first free elections in 40 years.”