Blues experts try to identify the first instrumental "country blues" recording.br br I don't mean blues by a vocalist such as Mamie Smith--anyway, she was too influenced by vaudeville to perform "country blues." br br Could this be it?br br Bobby Leecan & Robert Cooksey play "Dirty Guitar Blues" on Victor 20251.br br Recorded on Sept. 27, 1926.br br Sound file was done by Cary Ginell.br br Bobby Leecan & Robert Cooksey "Dirty Guitar Blues" on Victor 20251 (Sept.