Dewey O. Wiley, known to many as "Prof" or "D. O.” still has a familiar ring throughout the band halls of Texas although retired from the band profession since 1959. Wiley, known as “the father of the school band movement in Texas”, served as band director at Hardin-Simmons University in Abilene from 1922 to 1934, and at Texas Tech University from 1934 to 1959.

Dewey Wiley earned his unofficial title “Father of Texas Bands” partially because of the large number of his students who became Texas band directors, but primarily through his pioneer work with the Texas Music Educators Association and its predecessors. After serving several terms as officer in these organizations, he was elected treasurer for two terms and president for two terms; he served as editor of the TMEA magazine.