Compose music by adhering to the prescribed format and merging the given motif.
X:1
L:1/8
M:2/4
K:Bb
['z fd z z']  
X:1
L:1/8
M:2/4
K:Bb
 F | BdBd | B2 BB | cFFF | B2 z F | DB,DF | D2 DD | EEEE | D2 z2 | z fd z | z fd z | z fd |]  