Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:2/2
K:D
['DAFA DAFA', 'afdf gfed']  
X:1
L:1/8
M:2/2
K:D
 DAFA DAFA | DAFA (GE) E2 | DAFA DFAF | dBAG (FD) D2 :| afdf gfed | gefd (Be) e2 | afdf gfed | 
 (fa)eg (fd) d2 | afdf gfed | gefd (Be) e2 | af{a} ge fdec | dBAG FD D2 ||  