Create a musical piece using the provided alphabetic structure and motif.
X:1
L:1/8
M:2/4
K:Bb
['B BFFd dBBf fedc B2 z d']  
X:1
L:1/8
M:2/4
K:Bb
 B | BFFd | dBBf | fedc | B2 z d | c2 Ad | c2 Af | cABG | F2 z F | Feed | dccc | dfed | c2 z c | 
 dcBA | Ggfe | d2 c>c | B2 z |]  