Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['G/G/G GB d=fed', 'D2 d/d/d dd (ec)(cA) d/d/d ae f2']  
X:1
L:1/8
M:4/4
K:G
|: G/G/G GB d=fed | (ec)(cA) BGFD | G/G/G GB d=fed | e/e/e ec d2 D2 :: d/d/d dd (ec)(cA) | 
 d/d/d ae f2 e2 | gdec =fddc | BGAB G/G/G G2 :|  