Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
Q:1/4=100
M:2/4
K:D
['a f2 a', 'd/e/f/g/ aa']  
X:1
L:1/8
Q:1/4=100
M:2/4
K:D
 d2 e2 | f d2 e | f2 g2 | a f2 a | a f2 a | g e2 g | fdgf |{f} e4 :: fdfa | eceg | fdgf |{f} e4 | 
 d/e/f/g/ aa | d/e/f/g/ aa | bage | d4"^*" :|  