As I browsed World of Bluegrass in Raleigh last September, I caught up with four artists who make for a pretty good cross section of the genre circa 2019: Tim Stafford of Blue Highway, an iconic band celebrating its 25th anniversary, Irene Kelley, a veteran songwriter who's on top of the charts as an artist, Appalachian Road Show, a new super-group with a cultural mission and The Dead South, a young band of Canadian folk rockers who represent the adventuresome edge of bluegrass music. Notes and full versions of these edited interviews can be found at WMOT.org.