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:Gmin
['DGG^F G2 GA', 'dgg^f g2 ga']  
X:1
L:1/8
M:4/4
K:Gmin
 DGG^F G2 GA | BGdG eGdG | DFF=E F2 FG | AFcF dFcF | DGG^F G2 GA | BAGA Bcd=e | f=efd cAFA | 
 BGAF G4 :: dgg^f g2 ga | baga bgaf | dffg f2 fg | agfg afgf | dgg^f g2 ga | bagf dcd=e | 
 f=efd cAFA | BGAF G4 :|  