Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/4
M:4/4
K:Dmin
['a a f g a', 'f e A d e']  
X:1
L:1/4
M:4/4
K:Dmin
 a | a f g a | f3/2 e/ d a | a f g a | f2 f :| f | e A d e | f3/2 e/ d f | e A d e | f3 f | 
 e A d e | f e/f/ d a | a f g a | f3 ||  