sentences:  Renowned composers whose works have appeared in other collected editions, such as Josquin des Prez, Giovanni Pierluigi da Palestrina, and Orlande de Lassus, are generally excluded from the set.Many of the series are devoted to works of a single composer, and in some cases they are organized into sub-volumes because of their size (for example, "Volume 1" contains the works of Guillaume Dufay; it actually consists of 6 separate bound volumes, separately containing motets, masses, mass fragments, other liturgical music, and secular songs).Other series contain anthologies and contents of codices and manuscripts, documents which typically compile the work of many composers