I had Thomas sit down and watch the 3 tenors a couple weeks ago and he liked O Sole Mio, and even got out a chuckle when they were goofing around while singing. So because we like to add a new song every week other than he "humdrum" , monotonous etudes and classical repertoire his teacher has for him, we decided to try O Sole Mio. But while he was practicing it, he changed it up to mimic the 3 tenors in places, such as when Pavarotti fluctuated his voice in one part. He added that plus a number of other notes. He loved it as did I. I like the fact that he arranges certain pieces(he has done it 4 times now) to cater to his own tastes. He is doing Seasons in the Sun now but in the meantime, here is O Sole Mio, as arranged by him.