What two sub genres is the music, in which Hal Bynum is most closely associated, rooted? 
Hal Bynum: Harold L. "Hal" Bynum (born 1934) is an American songwriter associated with the Outlaw country movement in the 1970s. Outlaw country:  The music has its roots in earlier subgenres like honky tonk and rockabilly and is characterized by a blend of rock and folk rhythms, country instrumentation and introspective lyrics.
honky tonk and rockabilly