Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
Q:1/2=90
M:2/2
K:A
['A2 A2- ABcd edcB', 'B2 B2']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:A
 E2 | A2 A2- ABcd | edcB AcBA | B2 B2- Bdfe | dcBA GBGE | A2 A2- ABcd | edcB Aagf | 
 (g/a/b).e.g (f/g/a).^d.f | e2 e2 e2 :: E2 | B2 B2 B2 cd | ecBA GBGE | e2 e2 e2 fg | afed cecA | 
 f2 D2- Dfaf | e2 C2- Cefg | fdec dBAG | A2 A2 A2 :|  