Try Jakob Obrecht and Josquin Des prez masses... Super geniuses of the highest order..."Missa super Maria Zart" with Prague madrigalist though is my treasured version because of the rythm...Missa pange lingua but with Ensemble Clement Janequin because of the rythm ...Tallis scholars for example kill it with no rythm so well the sing and they sing well for sure ..
I am in love with Purcell Anthems... But i never retrieved the Wilcocks album i owned long ago and the actual complete Anthems version i own is acceptable but nothing more ...
There is too much geniuses in sacred music before Bach for only one thread...
it is not well known generally ...In fact most geniuses are not known at all ...Especially the Franco Flamish school...