Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:4/4
K:Gmin
['GGBG AFFA GGBG AGBG EGBG AFFA', 'G3 B GGgB A=FFA GGgd gagd fgfc'  
X:1
L:1/8
M:4/4
K:Gmin
 GGBG AFFA | GGBG AGBG | EGBG AFFA | GcBA G3 :: B | GGgB A=FFA | GGgd gagd | fgfc AFFA | 
 GcBA G2 G :|  