Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This short and succinct guide to the Solesmes method of singing Gregorian chant is especially commendable as a pedagogical tool and a resource for choirs and scholas. Its principal virtues are the clarity of explanation, the excellent examples, and the exercises.