The recently discovered Guerra Manuscript is an anthology of the finest pieces heard in Madrid during the second half of the 17th Century and was probably prepared for a high-ranking noble or member of the Spanish royal family. It contains a hundred vocal pieces by leading composers including Juan Hidalgo, José Marín, Juan de Navas, Cristóbal Galán, Juan Del Vado and Matías Ruiz, as well as others whose authors remain anonymous. Isabel Monar has been acclaimed worldwide for her concert and operatic performances. Manuel Vilas has collaborated with numerous groups, including Les Musiciens du Louvre, Al Ayre Español and Musica Ficta.