Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:2/2
K:G
['dc BdcA BGAF G2', 'd2 dc Bdfa bgdB c2 a2 a2']  
X:1
L:1/8
M:2/2
K:G
 dc | BdcA BGAF | G2 g2 g2 ag | fgag fedc | c4 B2 dc | BdcA BGAF | G2 b2 b2 ag | fage fde^c | 
 d2 d2 d2 :: dc | Bdfa bgdB | c2 a2 a2 cB | Aefg afdc | B2 g2 g2 e2 | fafd gbge | fafd gedc | 
 Bgec BGAF | G2 G2 G2 :|  