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
Q:1/4=90
M:6/8
K:G
['Bcd efg', 'd2 c Bcd efg', 'd2 c']  
X:1
L:1/8
Q:1/4=90
M:6/8
K:G
|:"^A" d | Bcd efg | age d2 c | Bcd efg | b2 a g2 :|"^B" d | BAG BdB | ABG A2 G/A/ | BdB AGA | 
 BGe d2 c | Bcd efg | age d2 c | Bcd efg | b2 a g2 ||"^C" d | BAG BdB |[M:9/8] ABG A3 G2 A | 
[M:6/8] B d2 B3 | A3 G A |[M:9/8] B G2 e3 d2 c |[M:6/8] Bcd efg | age d2 c | Bcd efg | b2 a g2 ||  