||Snow 1977: "I have not seen the first ed., 1966. The work's value lies mainly in C.'s account of the inception, carrying out, and eventual reception of the 1889 ed. of the CSM under the general editorship of Valmar. There are many quotations from the edition's introduction. The ceremony at which this piece was read, in Cartagena, was embellished by the musical performance of several cantigas: Prol. B., 65, 69, 21, 26, 10, 169, and 339."