Develop a musical piece by utilizing the alphabet-based notation of the selected musical form and the provided melodic idea.
X:1
L:1/8
M:6/8
K:G
['', 'G3 GAB AGE', 'c2 A']  
X:1
L:1/8
M:6/8
K:G
 D |: G3 GAB | AGE GED | G3 AGE | GED D2 F | G3 GAB | AGE GAB | c2 A BGE |1 D3 D3 :|2 D3 D2 B |: 
 c2 A BAG | (3.A.c.AA AGE | c2 A BGE | EDE G3 | c2 A BAG | A3 ABc | dcA AGE |1 GED D2 B :|2 
 GED D3 ||  