Petrus de Goscalch (floruit, fl. 1378–94) was a composer from the papal choir at Avignon of whom only one composition, "En nul estat", survives in the Chantilly Codex, but who may be significant as the possible author of the third part of The Berkeley Treatise of 1375.Reinhard Strohm, Bonnie J. Blackburn ''Music as Concept and Practice in the Late Middle Ages'' 0198162057 2001 "The Berkeley Treatise is an anonymous five-part compilation of works on fundamentals and mode, discant, mensuration (this part a version of the Libellus cantus mensurabilis secundum Johannem de Muris), musica speculativa, and tuning ... Its third part bears the date 1375 (and in a concordant manuscript an attribution to Goscalcus Francigena, possibly identical with the composer Goscalch known through one ballade in Chantilly, Musee Conde, MS 564). It is important for its exposition of the theory of hexachords built on notes other than C, F, and G..."

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* Trecento composers 14th-century composers Year of birth unknown Year of death unknown {{RC-bio-stub