The appearance of musical publishing in Lyon is a perfect example of the usefulness of archival sources as a complement to classical bibliographic work. Only three editions have been found before the year 1532 (date of the first musical editions dated by the printer Jacques Moderne), but the comparison of the mentions found in the inventories of booksellers or collections, essentially Spanish, reveals that a good fifteen editions were published between 1525 and 1530, with at least three technical processes: the Antico process in wood engraving, the Attaingnant process in typography or the Contrapunctus hybrid process (wood engraving and double printing). In Lyon, at that time, there were therefore multiple trials and hesitations as to which process to choose and, for musicologists of our time, a significant loss of part of the musical repertoire of that period.