In the U.S. during that period, I've since learned, there were more accordion students than piano students. However it wouldn't be long before Bill Haley and the Comets released Rock Around the Clock and soon after that the accordion was something you saw on the Lawrence Welk Show, which grand-dad was watching. Wikipedia's article on accordion music genres gives more info on this subject.
Like my friends I grew to see the instrument as the ultimate of un-cool. And in this, as with so very much that was thoughtlessly dismissive in my young life, I eventually managed to reevaluate my early prejudice and no longer recoil from, actually welcome, the presence of an accordion in, say, the band playing at a wedding reception.
All this came to mind this morning when I came across a link to a Youtube video of a young man playing the "Presto" section of "Summer" from Vivaldi's Four Seasons.
I'm not giving that link since it was accompanied by an annoying commercial promotion. Instead, a bit of searching turned up this plain version, marred only by the bizarre title given it by the uploader:
Youtube turns out to have quite a few versions of this piece on that instrument. I don't suppose it will surprise that they're almost all from central and eastern Europe. Here is a smattering of the many:
Quite a few are mobile-phone videos of street performers, such as:
And some are performances with other instruments like this: