Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['BG G2', ':|2 BdcA G2 (3ABc g3 e', 'd fdgd', 'fd d']  
X:1
L:1/8
M:4/4
K:G
|: DG G2 FGAc | BG G2 ABcA | d2 cd BG G | BdcA G3 E | DG G2 FGAc | BG G2 ABcA | dG cd BG G2 |1 || 
 BdcA [Gd]3 E :|2 || BdcA G2 (3ABc || g3 e fd d | fdgd fd d | g3 e fd d | defd g3 f | gbag fd d | 
 BG G2 ABcA | dG cd BG G2 |1 || BdcA G2 (3ABc :|2 || BdcA [Gd]3 E ||  