Piece ID is

PAssemezo Io. Bap. Besardi in tono precede per b durum

in THESAURUS HARMONICUS DIVINI LAURENCINI ROMANI, NEC NON [...] Ad decennium.

GB-Lbl K.4.h.1

Start: Folio: 86vSystem: 1 View Image
Continuation: Folio: 87r View Image
Finish: Folio: 87v View Image

People associated with source:

Jean-Baptiste BesardComposer(Probable)