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:Dmin
['DD AA A2 E2 GG GE F2']  
X:1
L:1/8
M:2/4
K:Dmin
"Dm" DD AA |"A7" A2 E2 |"A7" GG GE |"Dm" F2 D2 |"Dm" FE DF |"A7" EE A,2 |"A7" A,A,/A,/ ^CC | 
"Dm" DD D2 |]  