What constitutes bluegrass music? Does it need to be all acoustic? Can it ever be electric? Does it always include a banjo, a mandolin, a dobro and fiddles? If it ventures into jam band territory, is it still bluegrass?
The bluegrass question is one that the immensely talented Kalamazoo, Mich. band Greensky Bluegrass has been grappling with and answering since the members started 18 years ago.