1 2 3 4 5 6 7 8 9 10
f# a d f# a d f# a d f# push
a c# e g b c# e g b c# pull
"D" ACCORDION
''''PUSH ''' PULL
#1 F A
#2''''A-''''''C#
#3''''D-''''''E
#4''''F-''''''G#
#5''''A-''''''B
#6''''D-''''''C#
#7''''F-''''''E
#8''''A-''''''G#
#9''''D-''''''B
#10'''F-''''''C#
to go from c to d, add one letter.
key of d has 2 sharp notes, c and f.
you would have to know some music
theory to know that.
it;s available all over the internet
though, at that level.