Miniature Voyager

What is the name of this specific opera song that the doctor is singing on star trek voyager.?

Star Trek Voyager Season 6: Virtuoso

Late in the episode, the doctor performs again in the Messhall:
"In the Messhall, the Doctor is seated at a table while Qomarians queue up. On the table a holographic miniature of the Doctor singing the same aria from 'Don Carlo' by Verdi that he sang at the Messhall concert. Part-way through he joins in a duet in harmony with his miniature hologram. The queueing Qomarians are enthralled."

This specific song is the one I would like to know the name of. I checked I-tunes but this verse he sings isn't highlighted

You could have made this easier by putting a link to the correct clip since I for one never saw the Voyager show. If it is the duet below, it is called "Dio che nell'alma infondere", and the singing was apparently dubbed by a real opera singer named Agostino Castanola. The actor playing the Doctor did do some of his own singing in the episode, but Verdi is HARD! See link:
http://www.youtube.com/watch?v=CZfXAfAMzvY
I'm including links to a fuller version with Placido Domingo, and also to the lyrics and translation.

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