The film was the result of several years filming with a DV cam on his own. Raúl Rodríguez had be inspired to work on Saint John of the Cross poems after listening on the radio Amancio Prada's version of the "Cántico Espiritual" and, being acquainted to him, got in touch with the musician, who allowed the use of his songs for this visual poem.
Most landscapes were shot in the countryside near Segovia, north of Madrid, in Castilla. Quite an extreme region, very cold in winter and close to the Guadarrama sierra, mountains that surround Spain's capital. Images were obtained with patience and the personal touch of the director.
After the film was done, both director and musician went round Spain, mostly Castilla, doing live presentations of the film, which had been edited as a DVD-book, and also singing for the audience. Many of these shows took place in small cities, even villages, but also towns and even in peculiar places such as the cathedral of Avila.
Segovia was one of the important places in the life of Saint John of the Cross, the mystic Spanish poet. In the outskirts of Segovia his remnants are kept in a convent, and his tomb is supposed to heal and said to have made some miracles.
Life of Saint John of the Cross was quite hard, having been kept as a prisoner by his own community, who did not understand the kind of elevated poetry and ascetic lifestyle. In jail did Saint John write some of his best literature, a gift for Spanish Golden Age, the 16th century. Inspired by the Song of Songs and other ancient texts, his "Cántico Espiritual" depicts the marriage of the soul and God as a sort of love story, portraying what could be described as romance and even sex scenes.