Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:3/8=110
M:6/8
K:G
['D2 D G2', 'B<d z']  
X:1
L:1/8
Q:3/8=110
M:6/8
K:G
 D2 D G2 G | AGA B3 | D2 D G2 A | B2 c BGE | D2 D G2 G | AGA B2 e | edc BcB | G2 A BGE :: 
 d2 d dcB | e2 f g3 | ded dcB | e2 f gdB | d2 d dcB | efe efg | dec BcA | G2 A BGE | GFG B<d z | 
 AGA c<e z | GFG G2 A | B2 c BGE | GFG B<d z | c<e z B<d z | e<g z B<d z | G2 A BGE :|  