They play a lot in C# I think. I went to Festival Acadiens this year and that's the key that they were playing in.

I look at some live gigs and your right about C# and sometimes maybe in G#
I also listen again to the CD and that's More D and A
Also a waltz in G
Very special what they do at gigs, and Blake uses a special tuned accordion (maybe)
It makes me curious :-)

Blake uses his C# accordion. I can't believe they actually make those!