Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:1/4=102
M:2/4
K:G
['d2 B2- Bg gf/g/ a2 f2 dd']  
X:1
L:1/8
Q:1/4=102
M:2/4
K:G
 B/c/ |"G" dB/c/ dB/c/ | dB GB/c/ | dB/c/ dg |"D" f3 f/g/ |"D" af/g/ af/g/ | af dd/e/ | fe dc |1 
"G" B3 :|2"G" BB cd |]:"C" e2 c2- | cg fe |"G" d2 B2- | Bg gf/g/ |"D" a2 f2 |"D" dd ga |"G" b2 g2 | 
 dg f=f |"C" e2 c2- | cg ^fe |"G" d2 B2- |"G" Bg gf/g/ |"D" a2 f2 | dd ef |"G" g2 d2 |1 gg f=f :|2 
 g3 |]  