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:4/4
K:G
['G2 GA B2']  
X:1
L:1/8
M:4/4
K:G
 G2 GA B2 AA | G8 | A2 AB c2 BB | A6 A2 | A2 AB c2 (BA) | GA BG A2 D2 | G2 GA B2 A2 | G8 |]  