I have a Morelli almost-antique, full size piano accordion. It has...let's see... the full amount of bass, full keyboard, and two different 'voices' for the melody/piano keys side. It works GREAT. I love it. I play at our farmers' market, and other local events like festivals, family reunions, you name it. Genre? Folk, American Civil War tunes, hymns, gospel, country, some Irish. Oh and World War II songs by request.
Got it for 250 bucks off of a branch of the USA4Sale websites....the whole story is really amazing how the Lord let me get it., it was certainly beyond coincedental.

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