Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:D
['FA A2 BAFA dfed', 'fa a2 bfaf gfed']  
X:1
L:1/8
M:4/4
K:D
|:"D" FA A2 BAFA | dfed BddA | FA A2 BAFA | dfed B2 A2 | FA A2 BAFA | dfed Bdef | g3 e f3 e | 
 dfed B2 A2 :: fa a2 bfaf | gfed Bdde | fa a2 bfaf | gfed B2 A2 | fa a2 bfaf | gfed Bdef | 
 g3 e f3 e |1 dfed B2 A2 :|2 dfed B2 AG ||  