By Happy Traum
By Jace Clayton
By Bob Gendron
By David Hepworth
By Scharnagl, August
By MacGregor, Helen, Dexter, Alison, Collins Music
By Roger Evans
By Jan Swafford
By Harold C. Schonberg
By Roger Parker
By Dr. Daniel Saulnier, Dr. Mary Berry
By Barney Hoskyns
By Johnny Cash
By Lloyd Bradley (Author and contributor)
By Veit Erlmann (Professor and Endowed Chair, School of Music, Professor and Endowed Chair, University of Texas, Austin)