Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:A
['ABce c2', 'EFAc B2', 'ec A2 eA fAeA']  
X:1
L:1/8
M:4/4
K:A
|: ABce c2 Bc | efec B2 AF | ABce c2 BA | BAFE BAFE | ABce c2 Bc | efec efae | f3 a f2 ef | 
 afec B2 A2 :: EFAc B2 A2 | (3cBA Bc f2 e2 | EFAc B2 AB | cF F2 AFEC | EFAc B2 AB | 
 (3cBA Bc f2 ec | efab f2 ec |1 A3 c B2 AF :|2 A3 c B2 c/d/e |: f2 ec B2 f2 | ef a2 f2 ec | 
 A2 eA fAeA | ceae fece | f2 ec B2 f2 | ef a2 f2 ec | A2 eA fAeA |1 cfec B2 (3cde :|2 cfec B4 ||  