Steel-pan jazz, classic singer-songwriter, visionary funk/jam/beyond, and real rock ‘n’ roll. Those are merely the highlights of what’s featured in and around Asheville live-music-wise in the next 30 days. Artist: Jonathan Scales Fourchestra Venue: Asheville Music Hall Date: Thursday, April 21, 9 p.m. Door: $15 Scales is one of the most unque and visionary musical