Sorry, Robin, but, I've worked with a lot of accordian players and have had to figure out chords by watching the buttons, so you get no sympathy from me:-) Seriously, you can simply play the bass note for each chord listed--

Murray, I am sorry about that tune-in-the-head thing--this tune is particularly insidious, and was once even used as a singing commercial for Domino Sugar, which is what runs through my head when I hear it--the only solution is to replace it with another tune equally insidious--I suggest "Button Up Your Overcoat", though I am currently working out "Mele Kalikimaka", which would also do in a pinch--