A Kalamazoo-born post-nugrass outfit (if such a genre exists), Greensky Bluegrass certainly have the chops associated with the genre; they jumped on the scene by winning a band contest at the Telluride Bluegrass Festival, and the first half of their set is typically devoted to more traditional numbers. But like many a jamgrass band (there, that's the nomenclature), they can also get pretty far out there. Here’s Danielle Look, from her review of their 2010 Birdy's performance, where she contrasted the opening, traditional bluegrass set with the jammier second set: "It was as if the five-piece had wanted to first establish their musical foundation in bluegrass, and then say, 'Oh, by the way. We can melt your face, too.'" The face melting wound up with a lengthy cover of "When Doves Fly." Call it melt-grass.