No those arent the right medley. The first one I believe translates to " I am here at your feet Lord" not sure about the second one but its a different medley also. I too run into these problems because Im looking for an Italian catholic prayer book and they are hard to come by
Maybe he could put the lyrics here in English and someone can translate it into Italian for him. It might not be a literal translation but it can be close enough where he can at least try to sing it in Italian along with the english version.
Hmmm... It's been awhile since I've regularly attended mass, but it seems to me that certain hymns are sung on certain Sundays of the year or something like that. If the hymn is for a certain time and you can find that in the English hymnal, you might be able to get your hands on an Italian hymnal and find it that way? Maybe.