Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:3/2
K:A
['(3BBB GB', 'df eceg (3fff dfeceg a2 cABBGB']  
X:1
L:1/8
M:3/2
K:A
|: A2 cAEA Ac (3BBB GB | BAcAEA cA (3BBB GB | AAcAEA Ac (3BBB GB |1 dB (3ccc EAcA (3BBB GB :|2 
 dB (3ccc EAcA (3BBB GB |[M:2/4] A4 ||[M:3/2] ABcdec eg (3fff df | eceg (3fff dfeceg | 
 a2 cABB GB B2 cB | ABcdec eg (3fff df | eceg (3fff dfeceg | a2 cABBGB A4 ||  