Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:3/4
K:A
['c2 e2 c2', 'a2 A4']  
X:1
L:1/8
M:3/4
K:A
 c2 e2 c2 | d2 f2 d2 | c2 e2 c2 | edcB A2 :: a2 A4 | Acdefg | a2 A4 | edcB A2 :|  