There is a world-famous Italian song that is not "Nel blu dipinto di blu" known as "Volare" or even 'O sole mio. It is "Odio l'estate", better known as "Estate".
In 1960 it was written by Bruno Martino, who composed the music, and Bruno Brighetti, author of the lyrics. Hundreds of performers and musicians have sung and played it.
It is the only Italian song to be considered an international jazz standard.
Played by great musicians: from João Gilberto to Chet Baker, from Michel Petrucciani to Toots Thielemans.
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P.s.: This is a nice cover with lyrics:
https://www.youtube.com/watch?v=1zVvstu87CA