According to his vida, he was a joglars and trobaire (troubadour) who stayed for a long time in Montferrat, Cortemilia, and the Piedmont at the court of Ottone del Carretto (fl.
There did exist in the High Middle Ages a locale called Mulum southeast of Mantua and which may be the basis for a "Mula" family name, though evidence for this is lacking in other sources.
One of Peire's surviving couplets, Ia de razon no.m cal metr'en pantais, can be dated to before 1185 on the basis of a reference to Androin(e), that is, Andronicus I Comnenus, who died that year.
Peire's other couplet, Una leig vei d'escuoill, was also an attack on minstrels (joglars), who, at his time, were bringing their "insolence" from across the Alps into the presence of the pros (powerful) of Italy.
For his sirventes Peire imitated the metre of Raimbaut d'Aurenga's Er quant s'emba.l foill del fraisse.