Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/2
K:A
['e2 ee fefg', 'CA,CE A2 Ac BAFA e2 ef ecAc']  
X:1
L:1/8
M:2/2
K:A
 cd |"A" e2 ee fefg | afea fecd | e2 ee fefg |"E7" afec B2 cd |"A" e2 ee fefg |"D" afea fecA | 
"E7" e2 ef ecAc | BAGB"A" A2 :: CB, |"A" [A,E]2 [EA,][EA,] CA,CE | A2 Ac BAFE | A,2 A,B, CA,CA, | 
"E7" [B,E]2 [B,E][B,E] [B,E]2 CB, |"A" [A,E]2 [EA,][EA,] CA,CE | A2 Ac BAFA |"E7" e2 ef ecAc | 
 BAGB"A" A2 :|  