Behind The Counter Blues Week of May 13Percy MayfieldThe Voice Within--Beverly Records--$,' 14.99LeadbellyThe Immortal Leadbelly--Beverly Records--$,' 14.99Freddie KingBest Of Freddie King--Beverly Records--$,' 19.99Gloria HunterGlory Of--Beverly Records--$,' 14.99All Behind the Counter Specials >This Week's Top 50--Beverly Records--$,' 38.98Neighborhood Favs--Beverly Records--$,' 35.98RSD Overstock--Beverly Records--$,' 12.99Indie Exclusives--Beverly Records--$,' 35.98Local Record Shops Only