Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:Dmix
['dcA GED', 'd efg eag ge^c def g3 agf']  
X:1
L:1/8
M:6/8
K:Dmix
|: dcA GED | Ddc d3 | dcA GED | CEG c3 | dcA GED | Ddc d3 | e/f/ge ded |1 cAA ABc :|2 cAA A2 e |: 
 efg eaf | gdB c2 d | efg eag | ge^c def | g3 agf | gdB c2 d | e/f/ge ded |1 cAA A2 e :|2 
 cAA ABc ||  