Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:2/2
K:Dmix
['ADDF ADDA BAGB ADDe', 'fg afdf gefe dfed cAFG']  
X:1
L:1/8
M:2/2
K:Dmix
 FG | ADDF ADDA | BAGB ADDe | fedf ed^ce | dcAB cAFG | ADDF ADDA | BAGB ADDe | fedB c2 AG | 
 F2 D2 D2 :| fg | afdf gefe | dfed cAFG | AAfd AAgd | AAfd A2 fg | afdf gefe | dfed cAFG | 
 A2 FA dBAG | F2 D2 D2 :|  