Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:2/2
K:D
['dB B2 A2 FA', 'af f2']  
X:1
L:1/8
M:2/2
K:D
 dB B2 A2 FA | DAFA defe | dB B2 A2 FA | Beed egfe | dB B2 A2 FA | DAFA defg | afge fdef | 
 dBAB e3 f || af f2 afbf | af f2 efge | af f2 a3 f | egfe dB A2 | af f2 afbf | af f2 efge | 
 fa a2 fb b2 | bafe fgfe ||  