Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:C
['d2 B', 'FGA A2 d']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:G] e g ec[Q:1/8=280].d | gfe d2 B | cBA BAG | gfe d2 B | cAF G2 d | gfe d2 B | cBA GBd | 
 gbg d2 B | cAF G2 :| G | FGA A2 d | cAd cAG | FGA A2 d | cAF G2 G | FGA A2 d | cAd cAG | 
 gbg d2 B | cAF G2 :|  