sentences:  Ay mas ocho tonos de Canto llano, y ocho tonos de Canto de Organo para que puedan aprovechar los que A cantar començaren.Venetiis, Apud Hieronymum Scotum, MDLVI".It survives in a unique copy at the Uppsala University Library and was edited in 1909 by Rafael Mitjana; the subsequent literature has mostly adopted his spelling "Upsala" (""Upsala"" being the historic Swedish spelling of "Uppsala" until the major spelling reform of 1906).