Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:2/4
K:G
['GG AG', 'd>c Bg (gf) (fe)']  
X:1
L:1/8
M:2/4
K:G
 G | B>B A>A | GG AG | B>d gd | dc cB | B>B AA | GG AG | gB ce | dFG :: d | d>c Bg | (gf) (fe) | 
 d>c Bd | (d/c/)(c/B/) .B.A | d>c Bg | (gf) (fe) | df ag | fe dc :|  