Behind The Counter Blues Week of May 13J. BlackfootCity Slicker--Beverly Records--$,' 19.99Sonny Boy WilliamsonMore Real Folk Blues--Beverly Records--$,' 24.99Brenda BellSings The Blues Of Victoria Spivey--Beverly Records--$,' 14.99Plas JohnsonThe Blues--Beverly Records--$,' 19.99All Behind the Counter Specials >This Week's Top 50--Beverly Records--$,' 24.98Neighborhood Favs--Beverly Records--$,' 24.98Local Record Shops OnlyRSD Overstock--Beverly Records--$,' 10.99Indie Exclusives--Beverly Records--$,' 34.98Local Record Shops Only