Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:D
['d2 d2']  
X:1
L:1/8
M:4/4
K:D
 A2 |"D" d2 d2 d2 d2 |"A7" cdec"D" d2 A2 |"D" f2 f2 f2 f2 |"A7" efge"D" f2 d2 |]: 
"G" b2 b2"D" a3 f |"A7" g2 g2"D" f3 d |"G" B2 e2"Em" e3 d |1"A7" cABc"D" defa :|2"A7" cABc"D" d2 |]  