Dedicated to a 'sconosciuta'

When I unexpectedly bumped into Federico, the guy who promised to write me a note in a bottle left outside the Palazzo Strozzi, it made me realise just how small the city is! He recognised me and asked if I ever had received the note - a song that he had adapted to include my name - I hadn't.
He went on to tell me that he is an artist and the fact that I never did get the note he wrote has a certain poetic characteristic. (The fact that he said it was, in all likelihood taken by the bin men kills the poetry somewhat!) but he did keep a copy of the song, and is planning to use it in his next exhibition, framed and entitled 'Dedica a una sconasciuta' - Dedicated to an unknown girl.
If I bump into him again, I might ask him where the exhibition is - its the first time - at least that I know of - that someone has done something like that for me - and I'm curious to see the message in a bottle.