Bluegrass has a long, if sparse, history of comic acts who have applied the conventions of the music and stereotypes of the culture which produced it to the products of more widely appreciated musical styles. Think of Run-C&W, masterminded by country soul singer Russell Smith and bluegrasser-turned-Eagle Bernie Leadon, which dished up grassy versions of Motown classics; or the cult humor of Scott Rouse’s Sherman Van Heffer, who did Ozzy Osbourne bluegrass style. Well, the next generation is here, and their name is The Cleverlys. Like their predecessors, they succeed by being — well, clever rather than ham-handed; by building on a truthfulness that’s both appreciative and open-eyed; and by having a bushel full of chops in both the vocal and instrumental departments. A big hit with all but the most desiccated bluegrass audiences, they’re on a sharp upward swing, so now’s the best time to catch The Cleverlys. You may be a little shocked here and there, but mostly you’re just going to laugh at some exceedingly funny stuff.