<P> The song is one of the best - selling singles of all time, with more than 50 million sold . </P> <P> The title translates as "When, When, When". </P> <P> The song has been used and remixed by many artists and in many different arrangements, including English pop singer Engelbert Humperdinck in 1968 . In 2005, Michael Bublé performed the song as a duet with Nelly Furtado . There is an instrumental Latin version by Edgardo Cintron and The Tiempos Noventa Orchestra . The song was a 1962 Billboard Top 100 entry by Pat Boone . </P> <P> Quando is the only Italian word normally retained in most English - language renditions of the song . </P>

Who sings with michael buble on quando quando quando