Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['GGdG eGdG GBdB AGEF GGGA BABd eedB']  
X:1
L:1/8
M:4/4
K:G
 GGdG eGdG | GBdB AGEF | GGGA BABd | eedB AGEF | GGdG eGdG | GBdB AGEF | GGGA BABd | eedB AAef | 
 gggb aaab | gabg agef | gggb aaab | gedB A3 g | gabg gabg | gabg aaga | bgab gede | gedB AGEF ||  