This set is ideal for the beginning student who is using a small 12 bass accordion.  The cards include 

1.     Fundamental bass buttons A, D, G, C, F and Bb
   

2.     Major Chords A, D, G, C, F and Bb
   

3.     24 other cards including treble clef, and general button questions such as
   

        “Name the spaces on the treble clef.”