Complex sentence: Floyd Keith Cannon, known as Barney Cannon (October 9,1955--April 19,2009) was a popular deejay on radio station KWKH-AM in Shreveport, Louisiana, who was considered an authority on country music.
Split into simpler sentences: Floyd Keith Cannon, known as Barney Cannon (October 9,1955--April 19,2009) was an American radio personality. He was a DJ on radio station KWKH-AM in Shreveport, Louisiana, who was considered an authority on country music.