Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/4
K:G
['D G2 FE D2 DD c2 c2']  
X:1
L:1/8
M:2/4
K:G
 D | G2 FE | D2 DD | c2 c2 | B3 B | BAcA | G2 GB | A2 AF | G3 G/G/ | FAAA/A/ | GBdc | B2 AA | G3 |]  