Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:6/8
K:Amin
['c2 A (AcA) E2 A A2', 'A2 B']  
X:1
L:1/8
M:6/8
K:Amin
 B | c2 A (AcA) | E2 A A2 c | B2 G (GBc) | dBG GAB | c2 A (AcA) | E2 A A2 f | edc BAB | E2 A A2 :: 
 B | A2 B c2 d | e2 ^f g3 | faf gfe | (dBG) G2 B | A2 B c2 d | e2 ^g aga | edc BAc | E2 A A2 :|  