Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
Q:1/4=250
M:2/4
K:Cmin
['', '=BA G4', 'd f>e dc'  
X:1
L:1/8
Q:1/4=250
M:2/4
K:Cmin
 =B/c/ |:"G" d2 e2 | d>c =Bc |1 d2 e2 | d3 =B/c/ :|2"Fm" dc"G" =BA | G4 ::"Fm" c c2 =B | d c2 =B | 
 d>c =BA |"G" G4 |"Ab" e e2 d | f e2 d | f>e dc |"G" =B4 :|  