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The 1370s in music involved some significant events.
Events
1371 – Ludi theatrales (the earliest mention of vernacular biblical plays in Eastern Europe) were banned from the Corpus Christi processions in Bohemia.
Compositions
1378 – Matheus de Sancto Johanne, Inclite flos orti Gebenensis, (ballade) for three voices, dedicated to Pope Clement VII, who bestowed a canonicate in Laon upon the composer in this year.
John Stevens and Richard Rastall, "Medieval Drama, §IV: Medieval Drama in Eastern Europe", The New Grove Dictionary of Music and Musicians, second edition, edited by Stanley Sadie and John Tyrrell (London: Macmillan Publishers, 2001).
Ursula Günther, "Datierbare Balladen des späten 14. Jahrhunderts, II", Musica Disciplina 16 (1962): 151–74. Citation on 156–57.
Gabriella Biagi Ravenni, "Lucca", The New Grove Dictionary of Music and Musicians, second edition, edited by Stanley Sadie and John Tyrrell (London: Macmillan Publishers, 2001).