Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:3/4
K:Gmin
['G GA B3 d ee d4']  
X:1
L:1/8
Q:1/4=120
M:3/4
K:Gmin
 G | GA B3 d | ee d4 | cB G4 | cB G3 G | GA B3 d | ee d4 | (f2 d2) cB | G4 z |]  