Bill Monroe and the Bluegrass Boys.

Other Players include:

Cecil Thompson, Allen Shelton(banjo), Gary Thompson, The Brumfield Brothers, Dewey Edwards, Chuck Nation, Lum York, Texas Jim Oertling, Harold Bell, Red Withers, Jimmie Slocum.

Here are 3 sample tracks:

Track 2  I'll live my life alone

Track 3  I'm lost between the falling snow

Track 5  Louisiana Calling