Craft musical compositions adhering to the prescribed form and the provided musical idea.
X:1
L:1/8
M:2/4
K:G
['d2 dc', 'c2 dg bgdg Bgdg bgfa'  
X:1
L:1/8
M:2/4
K:G
 Bc | d2 dc | BGGB | d2 dc | B2 Bg | dedc | BGGB | cAFA | c2 :| dg | bgdg | Bgdg | bgfa | g2 ga | 
 bgdg | BgdB | cAFA | c2 dg | bgdg | Bgdg | bgfa | gfga | bgaf | gedB | cAFA | c2 :|  