Asheville won’t sit still for labels. Its inhabitants will smile and oblige mountain-music expectations with strings that threaten to ignite under a picker’s high-speed fingers. Sidewalk musicians will stage corner concerts, a gracious Asheville reception for guests drawn to the city for its celebrated jam sessions. But don’t dress the Asheville of your daydreams in a permanent pair of cowboy boots. And don’t brand it an unruly drummer too offbeat to march in time.