Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['G2 Bd GdBd GdBd cAFA', 'gfag fd d2']  
X:1
L:1/8
M:4/4
K:G
|: (3DEF | G2 Bd GdBd | GdBd cAFA | D2 FA DAFA | defd cAFA | G2 Bd GdBd | GdBd cAFA | DEFG ABce |1 
 dcAF G2 :|2 dcAF G3 |: E | DGBd gfag | fd d2 af d2 | DFAB c3 d | ed^cd =cAFA | DGBd gfag | 
 fd d2 afde | =f3 a g^fdc |1 BGAF G3 :|2 BGAF G2 ||  