Dismiss labels. Forget trying to fit into a scene. Be true and play your songs. That encompasses the prevailing spirit of LET IT GO, the fifth album from the Grammy-nominated bluegrass expansionists the Infamous Stringdusters. The new effort finds the band on firm footing, at ease with an evolving sound that defies categorization. It's acoustic music, sure, but not the kind you'll hear from any other band. Roots can be traced but boundaries don't exist.