Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:D
['dc/d/ ed cA', 'f>e fd g>f ge']  
X:1
L:1/8
M:2/4
K:D
|: A | dc/d/ ed | cA A2 | dc/d/ ef | g2 fe | dc/d/ ed | cA Ae | f/g/a ec | d2 d :: e | f>e fd | 
 g>f ge | f>e fa | ge ce | f>e fd | g>f ge | f/g/a ec | d2 d :|  