Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['A2 A']  
X:1
L:1/8
M:6/8
K:D
 A | F2 D ED C | D2 D/ D/ D2 F | E2 F GA B | A2 A A2 | B | F2 F FG A | B2 B B2 | B | E2 E EF G | 
 A2 A A3 | F D D D2 z | G E E E2 z | F G A B A G | F3 D/D/ D2 |]  