Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:A
['(3ABc dFFE FGAF EF (3ABc d3 B', 'A2 ce f2 fe fgaf ec (3ABc']  
X:1
L:1/8
M:4/4
K:A
 (3ABc | dFFE FGAF | EF (3ABc d3 B | cBAF E2 FA | B2 Bc B2 AB | cBAF ECEF | A2 AB A2 :: ce | 
 f2 fe fgaf | ec (3ABc d3 B | cBAF E2 FA | B2 Bc B2 AB | cBAF ECEF | A2 AB A2 :|  