The main difference between Opera and the previous polyphonic vocal music is the unique melodic line, resulting from the merging of bass and singing. In polyphonic music different vocal lines work independently, overlapping one another and making a text often incomprehensible. Opera instead offered a new way for making words expressive and intelligible, by creating a single melodic line, supported by an accompaniment.
On October 16, 1943 Roberto and his father were imprisoned in Milan. Two months later the 6th of December they were loaded like cattle in the same coach with other 64 people and left from the infamous platform 21 of Milan train station for a one way journey.
The protagonists of romantic operas live love differently than those of the eighteenth-century repertoire. For them love is a complete emotional enrapture. They share this incontrollable passion with a public who generally has a more ordinary life and now, through this new music drama, can experience a total emotional involvement.