Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/4
K:A
['ea c/e/c/B/ Ac EB cB', 'cB cB']  
X:1
L:1/8
M:2/4
K:A
 ea c/e/c/B/ | Ac EB | cB Bc/e/ | fe ce | ea c/e/c/B/ | Ac EB | cB cB |1 A2 A2 :|2 A2 A>B |: 
 cB Bc/e/ | fe cB | cB Bc/e/ | fe ce | ea c/e/c/B/ | Ac EB | cB cB |1 A2 A>B :|2 A2 A2 ||  