Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:2/2
K:D
['FA A2 BAFA dfed', 'faaf bfaf gfed'  
X:1
L:1/8
M:2/2
K:D
|: FA A2 BAFA | dfed Bc d2 | FA A2 BAFA | dfed B2 A2 | FA A2 BAFA | dfed Bcdf | g3 e f3 e | 
 dfed B2 A2 :: faaf bfaf | gfed Bcde | faaf bfaf | gfed B2 A2 | faaf bfaf | gfed Bcde | g3 e f3 e | 
 dfed B2 A2 :|  