Compose a musical piece based on the given motif and alphabet representation.
X:1
L:1/4
M:3/2
K:D
['B A G F3/2 E/ D f', 'B A', 'f g a f3/2 e/ d f', 'd d/c/', 'B A G F A/F/ B/F/A/B/']  
X:1
L:1/4
M:3/2
K:D
 B A G | F3/2 E/ D f e d | e E2 B A G | F3/2 E/ D f e d/c/ | d3 :: B A G | F A G B A d | 
 e E2 B A G | F A G B A B/c/ | d3 :: f g a | f3/2 e/ d f e d | e E2 f g a | f3/2 e/ d f e d/c/ | 
 d3 :: A B c | d d/c/ d d/c/ d/e/f/g/ | a a/^g/ a a/g/ a/b/a/=g/ | f e/f/ g/f/e/d/ c/A/B/c/ | d3 :: 
 B A G | F A/F/ B/F/A/B/ d/c/B/A/ | G E2 B A G | F A/F/ B/F/A/B/ c/B/A/G/ | F D2 :|  