Wolf Trap favorites The Avett Brothers return with their “accessible mix of bluegrass, rock, and folk” (NPR)! Enjoy two nights of the “Americana stalwarts” (Rolling Stone) folk-tinged songs filled with unbridled energy and honest, heartfelt lyrics. On Friday, see the roots rock band behind “A Beautiful Life” and the Winter in the Blood soundtrack as Heartless Bastards kick off the evening. Then on Saturday, folk duo Watchhouse (formerly Mandolin Orange) perform “Old Ties and Companions,” “Wildfire,” and more as they open the show.