By Denny Dyroff, Entertainment Editor, The Times The Connells When music fans talk about Southern rock, they are usually referring to a subgenre of music that is a blend of rock, country and blues with the focus on electric guitar.  Southern rock started in the 1970s and featured such bands as the Allman Brothers Band, ZZ Top and Lynyrd Skynyrd. There is another Southern rock subgenre that appeared...