Create musical pieces following the given structure and incorporating the suggested musical theme.
X:1
L:1/8
M:4/4
K:Bb
['B<B,B D/E/', 'e/d/c/B/ F>BD>B B,>f e/d/c/B/ g2 ga/b/'  
X:1
L:1/8
M:4/4
K:Bb
 d/c/ | B<B,B D/E/ F<B,B, d/c/ | B<B,B, D/E/ F2 F>d | B<B, B,>B F<B, F>D | CC D>F G2 Gd/c/ | 
 B<B,B D/E/ F/E/D/C/ Bd/c/ | B<B,B D/E/ F2 Fd/c/ | B>FB>d B>F G/F/E/D/ | CC E>F G2 G || d/c/ | 
 B>F e/d/c/B/ F>BD>B | B,>f e/d/c/B/ g2 ga/b/ | B>c B<f d>c B>B, | CC E>F G2 Gd/c/ | 
 B>f e/d/c/B/ F>BD>B | B,>f e/d/c/B/ g2 ga/b/ | f>b d>f B>d D>B | CC E>F G2 G ||  