This song by Lucio is dedicated to Caruso, who was an acclaimed Italian operatic singer
And the wind blows hard
Lucio Dalla stayed some time in the same hotel where Caruso spent some time before dying
On an old terrace
A few years before he died, Caruso met and wed a woman 20 years his junior, Dorothy, whom Lucio Dalla describes in this song. He had a daughter with her named Gloria
In front of the Gulf of Sorrento
Sorrento (Surriento in the Neapolitan language) is a town overlooking the Bay of Naples in Southern Italy, where this song was written
A man hugs a girl
After she had cried
Then he clears his throat
Lit: And then he clears his voice
And recommences the song
Or: And starts to sing again
I love you so much
Lit: I wish you well. Also, this is using Neapolitan dialect, as standard Italian would be: 'ti voglio bene'