Through a historically inspired interpretation, the GAUDIUM VOCIS group proposes, using instruments such as the medieval lute, saz, portative organ, dulzaina, harp, string drum and voices, a recreation of the musical atmosphere of the courts and fairs of the 13th, 14th and 15th centuries.
The "Red Book of Montserrat" is a manuscript containing a collection of songs from the late Middle Ages. It was written around the end of the 14th century and is preserved in the Monastery of Santa Maria Montserrat, on the outskirts of Barcelona. The 10 compositions that remain have no attributed author and are written in Catalan and Latin. There are musical pieces in monody, some with the possibility of being sung in canon, as well as polyphonic pieces for two to four voices. The "Cantigas de Santa Maria" are a set of four hundred and twenty-seven compositions from the 13th century, written in an early medieval variety of Galician-Portuguese and mostly depicting miracles and songs of praise to the Virgin Mary. The authors are unknown, although various studies have suggested that the Galician poet Airas Nunes and King Afonso X are some of the authors.