Compose a piece of music following the specified structure and theme.
X:1
L:1/4
Q:1/2=100
M:3/2
K:Gmin
['B G2', 'A/B/c/A/ B/c/ d d g B2', 'd g'  
X:1
L:1/4
Q:1/2=100
M:3/2
K:Gmin
 B G2 D G2 | B G2 B A/B/c/A/ | B G2 B G B | A F2 B A/B/c/A/ || B/c/ d d g B2 | B G2 B A/B/c/A/ | 
 B/c/ d d g B2 | A F2 B A/B/c/A/ || B/c/ d d g ^f2 | d g g a b a/g/ | a g/f/ g f/e/ f2 | 
 c f2 F A/B/c/A/ |]  