Have you ever heard of Guy Klucevsek? He is a wonderful accordionist who does Jazz/Klezmer/traditional/Polka/Eastern European/other stuff. He has about 8 or 10 albums out (unfortunately, all on CD only). I could recommend his albums "Accordance" with another accordionist Alan Bern and "Stolen Memories" on the Tzadik label. you can check his stuff out on his website: http://www.guyklucevsek.com. Enjoy!
Gary
Gary