Twenty of his poems survive: eight cansos, two pastorelas, two coblas, and eight tensos, several with his relatives and including a partimen with Maria de Ventadorn.
He and his brothers Ebles and Peire, as well as his cousin Elias, are all reputed troubadours and castellans of Ussel according to the author of the vida, who makes Gui himself a canon of Montferrand and Brioude in the diocese of Clermont.
[4] The only confirmation of Gui's family from outside his vida is a reference to the brothers Guido and Eblo Usseli donating land to the abbey of Bonaigue.
[5] Gui addresses several of his songs to Maria de Ventadorn (including the partimen) and makes reference to Peter II of Aragon in one which survives with a melody.
[5] His melodies all stay within a minor tenth interval and use numerous thirds and triads, but never repeating phrases in the AAB form.