Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:4/4
K:D
['a3 g f2 ef g2 f2 e4', 'Adfd Acec']  
X:1
L:1/8
M:4/4
K:D
 a3 g f2 ef | g2 f2 e4 | f2 d2 dcdf | edcB A2 fg | a3 g f2 ef | g2 f2 e4 | f2 a2 gfec | d4 d4 :: 
 Adfd Acec | Adfd Acec | d2 a2 g2 f2 | edef e2 A2 | Adfd Acec | Adfd Acec | A2 a2 gfec | d4 d4 :|  