 The quartet became known for continually improving their art, even after their win.They credited much of their success to their coaches, Mary Jo Hatton Thompson, Don Clause, Ron Riegler, Gene Stickler and Ed Weber, to their chorus Director, Jim Miller, and to their long-time arrangers, Ed Waesche and Walter Latzko.Bluegrass Student Union's members were Allen Hatton (tenor), Ken Hatton (lead), Dan Burgess (baritone), and Rick Staab (bass).