Guerau is today most famous for his ensenhamen, a long didactic poem written for his jongleur, Cabra.
The entire poem is basically a disorderly and wordy catalogue the things (names, songs, and stories) which Cabra ought to know in his capacity as public entertainer, but which in fact he does not know.
The eruditeness of the work is impressive, giving evidence of Guerau's learning, the writings he would have had access to in twelfth-century Catalonia, and the typical repertoire of a contemporary jongleur.
He is accused of mal saps viular / e pietz chantar: poor knowledge of how to play the viol and worse still of singing.
It is clear that by Guerau's time, Occitan lyric poetry had already witnessed a proliferation of genres.