The Infamous Stringdusters/Horseshoes & Hand Grenades

The current era of "jamgrass" bands — as dubiously as that term tends to roll off the tongue — is well under way and bearing fruit in a dynamic rock 'n' roll sense. These bands bring heat, and, though their roots are clear as crystal, there's something altogether different about them compared to more traditional outfits. The Infamous Stringdusters lean more toward the world of improvisation. In a 2015 show at the Beachland, when the composed sections of their songs wraps up, and, say, Andy Hall nudges his dobro into open-ended territory, the mood shifts entirely onstage. The band is here to jam, after all. And they do it exceedingly well. (Sandy)