Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:2/4
K:A
['fe cB', 'fe ce/e/ fe']  
X:1
L:1/8
M:2/4
K:A
|: E/ | A>B ce/e/ | fe cB | A>B ce | fg a2 | A>B ce | fe cB | AF FE | A2 A3/2 :: e/ | fe ce/e/ | 
 fe cB | A>B ce | fg a>e | fe ce/e/ | fe c/d/c/B/ | AF FE | A2 A3/2 :|  