Blues Session Country Tuned Diatonic Harmonica. Covers: Stainless Steel. Diatonic harp with Plastic comb in extra tuning Country. Only one note of the traditonal Richter-tuning is altered here: Hole 5 Draw is raised a semitone higher. This means, that the draw-chord is built by a major7, while at the same time one can bend the note down back into the old Richter-scheme. One has an added note without too much effort. Because this tone fits so well into Country music styles this tuning is named that way.