The first edition of the "Etudes de Genre" (25 Études de Genre pour la Guitare par Nap. Coste Op:38) by Napoléon Coste was published by Richault in Paris in 1873. Following his normal practice, Coste conceived the studies for a seven-string guitar. This instrument was extended in the bass region by the addition of a seventh string tuned usually to D but occasionally to C. In adapting these studies for a six-string guitar both the tuning down of the sixth string to D, which is customary today, as...