Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:3/8=88
M:3/8
K:C
['G2 G']  
X:1
L:1/8
Q:3/8=88
M:3/8
K:C
 G2 G | ccc | cBA | B3 | A3 | A2 A | ddd | dcB | c2 z | G2 G | c2 c | c_BA | _B3 | A3 | _B2 A | 
 G2 A | _BBA | G3- | G ||  