and historians such as Rios Ruiz and Álvarez Caballero began to carry out more rigorous research. (Ríos Ruiz, 1997:14). The first mention of flamenco in literature is in 1774 in the book Cartas Marruecas by José Cadalso . Traditional flamencologists, like Molina and Mairena, called the period 1780-1850 "The Hermetic Period"