... recommended as follows:Art No.DescriptionSizeB699669Button 96Bass 7+2 Variable Tone Button AccordionB System ,C System62 × 35 × 56 cmB601B20Button ... , D Tone48 × 38 ×36.5 cmB3112B31Button 12Bass 3 Variable Tone Button AccordionGCF ,ADG ,EAD ,FBbEb Tone43 × 30 × 45 ... Hexagonal Accordion58 × 44 × 48 cmB528052Button 80Bass 7+2 Variable Tone Button AccordionB System & C System62 × 35 × 56 cmB646064Button ...