SquareZ
Oh, 'tis jesting, dancing, drinking
   Spins the heavy world around.
--A.E. Housman
Calling Ideas for June 1, 2012

June is:

National Accordian Awareness Month
National Accordion Awareness Month was established in 1989 to promote the accordion, help spread the word about the resurgence in popularity in the accordion and to educate people about the accordion. Here's some info.

I'm sure there are bunches of (old) square dance records that feature the accordian. I tend to associate MacGregor with accordian arrangements.