Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:D
['AF DFAF G2 BG DGBG A3 F', 'ABde f2 df']  
X:1
L:1/8
M:4/4
K:D
 A2 AF DFAF | G2 BG DGBG | A3 F DFAF | GBAF EFDE | F2 AF DFAF | G2 BG DGBG | A3 F DFAF | 
 GBAF EF D2 || ABde f2 df | g2 eg fedB | ABde f2 df |1 afdf e2 dB :|2 afdf efdB ||  