 He wrote and directed many of the plays which the Jewish community were obliged to perform for the duchal court every year at the Carnival celebrations.Unfortunately, almost all of his works were lost in a fire at the Biblioteca Nazionale di Torino, in which sixteen volumes of manuscripts of his work were destroyed.The only works of de' Sommi which survive to this day are the aforementioned Hebrew comedy, the "Four Dialogues", a comedy and a pastoral work written in Italian, and a poem in defense of women, entitled "Shield of Women" (Hebrew