The source Rhau 1538 includes two motets at the beginning of the cycle, not present in the other sources: Crux triumphans and Jesus nomen dignum.
Additional concordances in mss. that do not transmit motet cycles: M176 and M177 in CH-SGs MS 462 (“Heer Liederbuch”).
This motet possibly quotes pre-existing material, but it can not be linked to any Cantus prius factus with a corresponding text.