https://www.diamm.ac.uk/sources/2285/
GB-Ob MS. Mus. Sch. e. 376 [Discantus] (Forrest-Heather Partbooks) - DIAMM
GB-Ob MS. Mus. Sch. e. 376 [Discantus] (Forrest-Heather Partbooks); c. 1528-30, 1553-8, 1590s, 1615-25; A Discantus partbook from a set of 6 volumes. First...
musschdiscantusforrestheather
https://www.discantus.pl/2017/06/20/nowa-odslona-discantus-pl/
Nowa odsłona discantus.pl | Chór Kameralny Discantus z Gowidlina
nowadiscantuskameralny