Fautes musicales et fautes textuelles dans les lais lyriques transmis par les chansonniers du Roi (M) et de Noailles (T)

In this contribution we shall present some anomalies in the musical notation of the anonymous lyric lais transmitted by French chansonniers M and T (i.e. Kievrefoil, Markiol and Nompar), which share the same source, and to which a recently discovered chansonnier fragment (Bo) can be added. The plural attestation of these heterostrophic texts allows to nuance the strict notion of musical error, advocated by John H. Marshall for this very corpus. Finally, we discuss an interesting case (Nompar, str. X) where musical notation can effectively help the reconstruction of a text corrupted in both witnesses.