He is credited with the formalisation, if not the invention, of the "light" style, or trobar leu.
Giraut was born to a lower-class family in the Limousin, probably in Bourney, near Excideuil in modern-day France.
Guiraut might have accompanied Richard I of England and Aimar V of Limoges on the Third Crusade and stayed a while with the "good prince of Antioch", Bohemond III.
He certainly made a pilgrimage to the Holy Land, but perhaps before the Crusade.
About ninety of Giraut's poems and four of his melodies survive; these were held in high esteem in the 13th century: Petrarch called him "master of the troubadours", while Dante, who preferred Arnaut Daniel, mentions that many considered him superior.