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
['gGgg gg gf/e/ ddd^d eE E2 ce', 'dc/B/ cc/d/ ef/g/ aA A2 g/b/a/g/ f/a/g/f/', '(3(A/B/c/) d A2 (G F) D2 F', 'd B2']  
X:1
L:1/8
M:4/4
K:G
|: gGgg gg gf/e/ | ddd^d eE E2 | ce ed/c/ | Bd dc/B/ |{c} BA/G/ DE/F/ G2 [GG,]2 :: Bddd dd dc/B/ | 
 cc/d/ ef/g/ aA A2 | g/b/a/g/ f/a/g/f/ e/g/f/e/ d/e/d/c/ | B/d/c/B/ A/c/B/A/ G2 [GG,]2 :| 
[K:D] (3(A/B/c/) | d A2 (G | F) D2 F | EGFE | FDFA | d f2 (d | c) e2 A | BdB^G | A2- A :: 
 (3(A/B/c/) | d B2 G- | G E2 a- | a f2 d- | d B2 b- | b g2 e- | e c2 (A | G) B2 G | (3(FGA) FD | 
 G B2 G | FA df |{f} e2 dc | d2 d :|  