Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:4/4
K:A
['A2 A>B cBc<e', 'ef/g/ ag fef<a']  
X:1
L:1/8
M:4/4
K:A
|: A2 A>B cBc<e | ef/g/ ae cAA<G | A2 A>B cBc<e | A>BcA B2 A2 :: ef/g/ ag fef<a | ef/g/ ae cAA>G | 
 ef/g/ ag fef<a | A>BcA B2 A2 :|  