Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
['dcd AFD GBG FAF', 'aba fdf']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
 A | dcd faf | dcd AFD | GBG FAF | EFG ABc | dcd f/g/af | dcd AFD | GBG FAF | GEC D2 :| f | 
 aba fdf | aba fdf | gag ece | gag ece | aba fdf | aba agf | afd bge | dAF D2 f | aba fdf | 
 Adf agf | gag ece | Ace gfe | dcd ede | fef gfg | a^ga b=ge | dAF D3 ||  