Silenzio

Hey there! Did you try to google for sheet music?

I found this site, it may be helpful for the piano part.
Usually the violin plays the main melody and the guitar has the chords.
You'll have to arrange it on your own, or buy sheet music somewhere.
Asking for it in a music store might be the best way!

I personally don't have personal experience with that specific song.
Good luck and have fun!

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Sometimes the - silence - guides your mind.