Angelorum Psalat exhibits considerable rhythmic complexity[2] and its text employs contrasting imagery of original sin and the harmony of the spheres, a common poetic device of the age.
[4] However, this Rodrigo appears in Toledo as late as 1458, which would have made him extraordinarily long-lived, even assuming he composed maturely from a young age.
Rogerii is a plausible candidate, since his terms of service in various courts closely tracked with those of composers whose style resembles that developed in Angelorum Psalat.
[7] Rogerii also named himself "Vatignies", apparently after a little northern French community until today (Wattignies),[8] in the close vicinity of either Senlecques or Salesches, where the composer Senleches may have come from.
In his later years, Rogerii was a distinguished member of the papal chapel, which he reentered in 1396 earning the commendation "omnes et singule exemptiones, immunitates, franchisie ac libertates capellanorum et familiarum" [9]