That same year , to mark the 50th anniversary of Giuseppe Verdi 's death , the Italian state radio network RAI engaged Bergonzi for a series of broadcasts of the lesser-known Verdi operas I due Foscari , Giovanna d'Arco , and Simon Boccanegra .
That same year , on the 100th anniversary of Verdi 's death , he sang on Italian radio in several Verdi works , such as I Due Foscari , Giovanna d'Arco , Simon Boccanegra , etc. .