Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/2
K:A
['cBAB cABA FADF EAAG', 'A4 bafa eAcf eAce f3 g ae']  
X:1
L:1/8
M:2/2
K:A
 ed | c2 cB cBAB | cABA FADF | EAAG ABca | fdBA GBed | BccB cBAB | cABA FADF | EAAG Acfc | 
 ecBc A4 :| bafa eAcf | eAce f3 g | ae e2 faec | dBcA Bfed | BccB cBAB | cABA FADF | EAAG Acfc | 
 ecBc A4 :|  