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:C
['', 'eedc eedc', 'ecdB c2']  
X:1
L:1/8
M:4/4
K:C
 cd |: eedc eedc | eedc Accd | eedc eedc |1 ecdB cccd :|2 ecdB ccce |: geae gecd | ecec Adef | 
 geae gecd |1 ecdB c2 ce :|2 ecdB c2 cd ||  