Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/16
M:2/4
K:G
['EBGB ABcA B2G2 AB (3cBA BAGB', 'd2d2 edcB ABcA B2G2 AB (3cBA BAGB']  
X:1
L:1/16
M:2/4
K:G
 B2GB EBGB | ABcA B2G2 | AB (3cBA BAGB | AFFG ABcA | B2 GB EBGB | ABcA B2G2 | AB (3cBA BAGB | 
 AFDF E4 :: d2d2 edcB | ABcA B2G2 | AB (3cBA BAGB | AFFG ABcA | d2d2 edcB | ABcA B2G2 | 
 AB (3cBA BAGB | AFDF E4 :|  