Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
M:2/4
K:B
['z2 z B,,/C,/']  
X:1
L:1/8
M:2/4
K:B
 z2 z B,,/C,/ | D,4 | C,4 | B,,2 z2 | z2 (3B,,C,D, | C,4 | B,,4 | z2 z B,,/C,/ | 
 D,2 C,/>D,/C,/D,/ | B,,2 (3B,,C,D, | B,,4 |]  