His first two volumes of chansons are for four voices, and are settings of the Amours of Pierre de Ronsard, poems which describe the stages and incidents in a love affair gone sour.
Bertrand's sacred works, contained in his three publications of Airs spirituels and sonets chrestiens, are closely related stylistically to the contemporary psalm-settings by the Huguenots: they are simple both melodically and harmonically, and usually maintain a homophonic texture throughout.