Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/8=160
M:9/8
K:D
['A2 d FDF', 'D2 d AGF', 'd2 f agf', 'e d2 f agf agf bgf/g/ e2', 'DFF dFF']  
X:1
L:1/8
Q:1/8=160
M:9/8
K:D
 A2 d FDF FDF | A2 d FDF G2 E | A2 d FDF FDF | BAB D2 F G2 E :|"^5" D2 d AGF AGF | D2 d AGF G2 E | 
 D2 d AGF AGF | BAB E2 F G2 E :|"^9" d2 d fed ecA | d2 g fdf g2 e | dfe fdB AGF | BAB D2 F G2 E :| 
"^13" d2 f agf agf | d2 f agf g2 e | d2 f agf agf | bgf/g/ e2 f g2 e :|"^17" dfe/c/ dAF dAF | 
 dge/c/ dAF GFE | dfe/c/ dAF dAF | BAB E2 F GFE :|"^21" DFF dFF AFF | DFF dFF GFE | DFF dFF AFF | 
 BAB E2 F GFE :|  