Boone Creek, the short-lived group featuring Ricky Skaggs, Jerry Douglas, and future Doyle Lawson banjoist, Terry Baucom. This is yet another example of progressive bluegrass done right.

Listen to the pure country sweetness of Douglas’s break on “Me and Bobby McGee”, followed by Ricky Skaggs who doesn’t seem to know if he’s Bill Monroe, John Duffey, or jazz-rock guitarist, George Benson.
You may not love it, but you can’t classify it as anything but bluegrass – the drive, timing, vocal style, and subject matter see to that, along with the specific selection of acoustic instruments. Tear down the walls and incubate a new strain, by all means. Just make sure that your bluegrass says “bluegrass” with something more than the instrumentation.