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
['D2 DE', 'ABde f2 fg afdf']  
X:1
L:1/8
M:4/4
K:C
[M:4/4][K:D] f ue[Q:1/8=360] D2 DE EDB,C | D2 DE FA A2 | Beed e2 de | f2 ed ceeB | D2 DE EDB,C | 
 DCDE FA A2 | Beef e2 dB | AFEF D4 :| ABde f2 fg | afdf eB B2 | ABde f2 fg | afdf e2 dB | 
 ABde f2 fg | afdf eBBA | d2 dB ABdf | afef d4 :|  