Every Italian knows this song the way every french men might know la Vie en Rose. Here is the most popular and famous version of Quando Quando Quando as sung by Tony Renis in 1962. It is smooth like the Rat Pack in Italiano.
And here is the modern Black Eyed Peas version mostly sung in english wich is close but not an exact translation of the lyrics.
Which do you like better? FYI, Quando means When in Italian.