Fifty-three years into a legendary career, much has changed about The Seldom Scene, starting with the venerable progressive bluegrass quintet’s various lineup iterations over time. But even as band members have stepped in and out of various roles, what’s most important is what hasn’t changed: an undeniable knack for blending both old and new music and traditions without sacrificing what makes either potent and durable. Their current iteration is a true blue lineup: guitarist mandolin player Lou Reid, bassist Ronnie Simpkins, banjoist and fiddler Ron Stewart, dobro player Fred Travers, and guitarist Clay Hess.

 Since they started up together in 1971, The Seldom Scene has dexterously performed original and traditional songs while presenting fiery and soulful reinterpretations of material by Merle Haggard, James Taylor, and more. The concept of bluegrass unshackling itself from a conservative, straight-ahead mindset seems like a given now, when some of its biggest stars fill stadiums…