Armed with mandolin, fiddle, banjo, bass and voice, the Bluegrass Gospel Project push the parameters of their genre. If its YouTube videos are any indicator, the six-member ensemble is as comfortable putting a twangy twist to U2’s “I Still Haven’t Found What I’m Looking For” as picking along to a traditional spiritual number such as “River of Jordan.” “They have this natural onstage camaraderie,” says Vergennes Opera House president Gerianne Smart, “that shows off their incredible musicianship and tight-knit vocal harmonies.” Front man Taylor Armerding of Northern Lights fame leads the group in a program ranging from pop-rock cover tunes to sacred strains.