Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['Td3 fef dBB B2', 'Td3 fed']  
X:1
L:1/8
M:6/8
K:D
 A | Td3 fef | dBB B2 d | cAc efd | cAA ABc | Td3 fef | dBB B2 g | fga efg | fdd d2 :: A | 
 Td3 fed | faa a2 f | Td3 fed | cee cee | Td3 fed | (f/g/a).a a2 g | (f/g/a).f ede | fdd d2 :|  