Create music using the specified musical structure and the provided theme.
X:1
L:1/8
M:2/4
K:Bb
['B/c/ dBBc/d/ eccB/c/ dBBc/d/ eccf c2 z']  
X:1
L:1/8
M:2/4
K:Bb
 B/c/ | dBBc/d/ | eccB/c/ | dBBc/d/ | eccf | c2 z d | ecdB | c2 cd | edcd | B2 BB | c2 BA | B2 z |]  