Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=180
M:2/2
K:A
['ABcB ABcA BF F2', 'cd e2 ae']  
X:1
L:1/8
Q:1/8=180
M:2/2
K:A
 EAAB ABcB | ABcA BF F2 | EAAB ABce | faec d2 cB | A3 B ABcB | ABcA BF F2 | EA A2 ABce | 
 faec A2 cd || e2 ae feaf | eaec d2 cd | e2 ae fefb | afec d2 cd | e2 ae feaf | eaec d2 cB | 
 c2 cB cefb | afec dBcA"_DC" |]  