Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:A
['AEAc BEGB cEAc eAce', 'caga faad daga ceeB BdcB (3AAA cA']  
X:1
L:1/8
M:4/4
K:A
 AEAc BEGB | cEAc eAce | faag gaea | ceec dBGB | AEAc BEGB | cEAc eAce | faga efec |1 
 dBGB A2 AB :|2 dBGB A2 ce || faad daga | eaac caga | faad daga | ceeB BdcB | (3AAA cA BcdB | 
 cdec defg | agae (3fgaec | dBGB A2 z2 :|  