Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:Bmin
['fBBA BdFG-', 'fBBA BdFG-', ''  
X:1
L:1/8
M:4/4
K:Bmin
 fBBA BdFG- | GBdB Acec | fBBA BdFG- | GABd cB B/B/B | fBBA BdFG- | GBdB cdeg | fBBA BdFG- | 
 GBfe dBBA | affe decd- | decd ed c/B/A | affe decd- | dfaf feef | affe decd- | decd ed c/B/A | 
 fBBA Bfcd- | dfec dcBA |: fBBA BdFG- | GBdB Acec | fBBA BdFG- | GABd cB B/B/B | fBBA BdFG- | 
 GBdB cdeg | fBBA BdFG- | GBfe dBBA | affe decd- | decd ed c/B/A | affe decd- | dfaf feef | 
 affe decd- | decd ed c/B/A | fBBA Bfcd- | dfec dcBA | cFFc dGGd | cFFe dBBd | cFFc dGGd | 
 cfec dBBd | cFFc dGGd | cFFe dBBd | cFFc dGGd | cfec defg | affd caBc- | caBc dcBA | affd caBc- | 
 caaf feef | affd caBc- | caBc dcBA | fBBA Bfcd- | dfec dcBA :| B8 ||  