Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
['DEFG AFFB', 'faef defa', 'FADA FADB', 'faef defa']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
|:"^Reel." uF | DEFG AFFB | AFFD E2 (EF) | DEFG AFFB | AGFE D2- D :: g | faef defa | AFFD E2- Eg | 
 faef defa | AGFE D2- D :: uA | FADA FADB | AFFD E2 (EA) | FADA FADB | AGFE D2- D :: ug | 
 faef defa | AFFD E2- Eg | faef defa | AGFE D2- D :|"_Fine." D4 ||  