Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:6/8
K:Amin
['E2 B BAG', 'eBe bag abe']  
X:1
L:1/8
M:6/8
K:Amin
 E2 B BAG | ABG FED | E2 B BAG | eBd e2 E | E2 B BAG | ABG FED |1 EFG eBd | edF E3 :|2 EFG edB | 
 edF E3 |: eBe bag | abe e2 d | eBe bag | abe d3 | eBe bag | abe e2 d | deb abg | efd e3 :|  