Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/4
M:4/4
K:Bb
['d c B']  
X:1
L:1/4
M:4/4
K:Bb
 F | B3/2 A/ B d/c/ | B A B B/c/ | d d c B | c z2 c | c B/c/ d c | B G _A B | F G _A G | F z2 |]  