David's got it right. Plus, not many (standard) Cajun players use anything but a C or D accordion. I don't know of any Cajun players using a G accordion. It's just not traditional.
My experience is most Cajun tunes are played in the key of C on a C box. In layman's terms, most of the notes are pushed, rather than pulled, using more notes in the key of C (the one chord.) That's been my experience, overall. That's not to say I don't pull for notes on these tunes -- ya gotta! A lot of turnarounds will switch the key to the draw,(key of G) but principally, the song still is considered in the key of C.
Conversely, I find most zydeco tunes are generally played on the draw (crossharp), and if played on a C accordion, they fit nicely in the key of G. The structure of (nouveau) zydeco tunes almost never have a traditional turnaround in them. Most zydeco bands opt for a rhythmical breakdown to drum/bass/scrubboard rather to a melodic chord change or bridge.
One row Cajun style boxes in G are used extensively in Quebec music.. that is the most popular Key for a one row as far as I know, and all learning material is pitched on a G box..
That is an interesting tidbit. Are they typically high G or low G? I know that with F, they can be either way, although I have no idea which would be more common.
I own a g one row sonata accordion, not that I play it much. It has a low low sound. They're rare here in Quebec. Gi is very popular for quebecois music, mostly because that's what the fiddles like, I believe.
Quite right, the key of choice for Quebecois Music played on the Melodeon or 4 stops one row is D , and if you were trying to sell your C box in the Province of Quebec, you would have very few takers, c'est la vie, tant pis .
In my haste to post an answer before I left for work,
it seems that I got the order mixed up on some of the keys, in my post below.
Switch the second and third position for the keys of
"F", "A", "D", and "Bb".
Jude
In Quebec music they very well play in D..( that would be on the pull on a G box ? ).. All I know that the learning material I have is a video using a G box..and was told by numerous sources that G boxes were the preferred key for Quebec music. I can't assertain that and of course believe anyone who is from there and knows far more than me. I do know that when I sold a G box.. i had nearly all takers from Quebec.. and who played that type of music. They seemed to specifically want a G box. Maybe as a second box?
Check Gagne et freres, link.
Their music store is located in Quebec city, not far from the Montmagny annual accordion festival location.
Old store, and they do "know" about accordions :).
E-mail or phone Richard Gagne, hell of a guy, an authority on Quebec accordions,their tuning and their past and present makers.
He should be able to give you the "definite answser" on accordion tuning in the Province of Quebec.
Other sources are of course Junior Martin, Larry Miller,and Marc Savoy, as they also sell some of their boxes to the Province of Quebec.
Check also the other link, I provided , a nice man, and builder Clement Breton, nice box too.