Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:4/4
K:Bmin
['f2 Bf dfBd', 'dafd cAec dBBc :|2 BcdB cdea fdec'  
X:1
L:1/8
M:4/4
K:Bmin
|: f2 Bf dfBd | cAce aecA |1 f2 Bf dfBd | cAec dBBA :|2 BcdB cdea | fdec dB B2 |: Bafd dafd | 
 cAce aecA |1 Bafd dafd | cAec dBBc :|2 BcdB cdea | fdec dB B2 ||  