Create musical pieces following the given structure and incorporating the suggested musical theme.
X:1
L:1/8
M:2/2
K:Bb
['(BA)Bc (BF)dc', '(BA)Bc (BF)dc'  
X:1
L:1/8
M:2/2
K:Bb
 (udc) | (BA)Bc (BF)dc | (BA)Bc (BF)dc | (Bc)de (fB)gf | (ed)cB (AF)GA | (BA)Bc (BF)dc | 
 (BA)Bc (BF)dc | BfdB AFGA | B2 d2 B2 :: (uAB) | cAFA cAdB | ecAc ecgf | (ed)c=B (cG)c_B | 
 (A=e)fe (fd)_ec | (BA)Bc (BF)dc | (BA)Bc (BF)dc | BfdB AFGA | B2 d2 B2 :|  