Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:2/2
K:Cmin
['cded c2', 'cgeg Bcde fbdB |1 cdef gcec dBfd']  
X:1
L:1/8
M:2/2
K:Cmin
 G | cded c2 Gc | BdGB FBDB, |1 cded c2 eg | dBfd c/c/c c :|2 gfed edcB | GBFD C/C/C C |: G | 
 cdeg cgeg | Bcde fbdB |1 cdef gcec | dBfd c/c/c c :|2 gfed edcB | GBFD C/C/C c ||  