I'm glad someone mentioned the "Sons of the Pioneers." As a youngster growing up in ranch country in the late 1940's, "Cool Water" and "Tumbling Tumbleweeds," among others, were like folk songs to me. Their arrangements seemed haunting at times. Bob Nolan had quite a run as a composer. Oh, and Leonard Slye(Better known as Roy Rogers)was one of the founders. After his departure, another cowboy actor, Ken Curtis (Festus on TV's Gunsmoke) was with them for some time. The comedy musical group, "Riders in the Sky," has long paid homage to their legacy.