All-Zen-On Guitar Etude Series: Coste, Aguado, Llobet, Giuliani, Carcassi, Tarrega: A set of 6 etudes These scores were purchased 20 or 30 years ago, so the covers have some discoloration and wear, but overall they are in very good condition. There is fingering written on one piece (No. 14) of the Coste etudes, but there is no other writing. The musical scores themselves are all in very clean condition. A great value set of 6 books.