Design a musical creation that involves the supplied motif and respects the established alphabetical structure.
X:1
L:1/4
M:4/4
K:Bb
['B B']  
X:1
L:1/4
M:4/4
K:Bb
 F | B B F F | D2 F2 | d d c c | B2 z B | B d f d | d3/2 c/ c c | B B d B | B3/2 A/ A2 | G2 B G | 
 F F/D/ D F | d d/B/ c c/A/ | B2 z |]  