I'll put them side by side. Now is Forever is in bold, Cosa Restera in italics.
the past is all that’s gone,
the future is yet to come.
o alba chiara
this moment is all our own.
Nel blu dipinto di blu
we should live this way,
Seriously, listen to the songs and you can sing the lyrics from one in the other. It's not identical note for note, but am I the only crazy person to hear it?
Okay, now I'm going to write my essay.