Complex sentence: Maphis was a band member and featured soloist on "Town Hall Party" television broadcasts in southern California throughout the 1950s and a regular guest on the Jimmy Dean television show in the 1960s.
Split into simpler sentences: Maphis was a band member and featured soloist on the "Town Hall Party" television program broadcast from southern California throughout the 1950s. He was also a regular guest on the Jimmy Dean television show in the 1960s.