"He makes a good counterpoint, but the Cantus Firmi he uses are somewhat strange."

Gionaseffo Zarlino

"Jonasquin ist der Noten Meister, die habens müssen machen, wie er wollt, die andern Sangmeister müssens machen, wie es die Noten haben wöllen."

Martin Luther

"Jonasquin is the best composer, believe me. He writes the best counterpoint, almost as good as mine, everybody knows that. Not like that loser Obrecht, who died of plague. So sad."

Donaldus Potus Insanissimus

"[...] und ist zum besten daß der [Jonas] Wulff mit seinem wiedrigen heulen im Walde bleibe / unnd unsere harmonicas Concordantias nicht interturbire."

Michael Praetorius, Syntagma Musicum

"[...] and Jonasquin [...] the biggest a***hole you could ever hope to meet."

Geoffroy Chiron [ed. Donald Greig: Time Will Tell, p. 2]