Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:A
['ECFC ECB,C A,CEC', 'FecA f3 a fdcd AdfA dfAf e3']  
X:1
L:1/8
M:4/4
K:A
 ABcB AFFA | ECFC ECB,C | A,CEC DF F2 | E2 ec BAFE | ABcB AFdF | ECFC ECB,C | A,CEC D3 f |1 
 ecBc A3 E :|2 ecBc A2 cd || e3 f ecBc | AecA FecA | f3 a fdcd | AdfA dfAf | e3 f ecBc | 
 AecA GecA | d2 fd Adfd |1 ecBc Agaf :|2 ecBc A3 E ||  