Where can I find a roving concertina player as well as a band to play Italian music for our June 28th FESTA at Stone's Throw Winery in Door County?

When you think about Italian music you need to clarify what part of Italy you are referring to. Italian music has regional identities and significant differences: from Arabic-influenced sounds of the South, fiery tarantella of Sardinia and Sicilian bass to the almost Celtic melodies of the north. So if you want to emphasize the origin of your product, start from identifying the region. If you don't want to go too deep into musical refinements then go for Central Italian music, famous for its organetto music whose sound is the essence of Italy especially to foreigners. (Check Riccardo Tesi website). I don't know if you have an Italian folk band in Door County in particular. But I would recommend you to contact the Italian Dance Group of Milwaukee (www.italian-american.com/ifafa/milwaukee.htm); they are located not far from you and might have information regarding the music band in your area.