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:1/8=180
M:12/8
K:G
['ded B2', 'gfg b2 b bag']  
X:1
L:1/8
Q:1/8=180
M:12/8
K:G
 e | gfg ded B2 d G2 B | AGA DFA G2 A def | ged ded B2 G GFG | AGA DFA G3 G2 :| B | 
 d2 g gfg b2 b bag | a2 g e2 f gfg edB | Agg gfg b2 b bag | faa e2 f g3 g2 :|  