O'Daniel worked in the flour milling business and moved to Fort Worth in 1925 to work for the Burrus Mills. O'Daniel soon took over their radio advertising, wrote songs and hired a group of musicians. His band was originally called the the Allasin Laddies. He changed their name to Light Crust Doughboys. [country musician Bob Wills got his start here] After the Doughboys split up, O'Daniel formed the Western Swing band "Pappy O'Daniel and his Hillbilly Boys." The new group was named after O'Daniel's Hillbilly Flour Company.
W. Lee O'Daniel portrayed himseelf as simple firied-chicken loving hillbily fighting the establishment. And for once the good-ol' boy image was pretty accurate. Hewas famous for refusing to sign bills he didnt understand. He fought bitterly with the Texas legislature and was overridden a record 17 times. You can listen to him pimp his flour here: http://www.otrcat.com/patodaniel.htm
Of course in the movie the only radio station noted by calls was WEZY-AM with the blind engineer. The WEZY calls currrently reside in Racine, Wisconsin. Fifty years ago they were not in Texas nor in Missisippi. In the mid eighties WEZY was just outside Tampa.
There is a book about he man called "pass the biscuits pappy"read about it here: