Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
Q:3/8=60
M:3/8
K:Bb
['B>cB FBd', 'B2 A/B/ cAF dBG ecA fdB cAF', 'bag fdd', 'fdg e2 c']  
X:1
L:1/8
Q:3/8=60
M:3/8
K:Bb
 F | B>cB | FBd | ecA | B/A/B/c/ B | B>cB | FBd | ecA | B2 :| A/B/ | cAF | dBG | ecA | fdB | cAF | 
 dBF | ecA | B2 || b | bag | fdd | ecc | dBB | bag | fdd | ecA | B2 :: f | fdg | e2 c | Acf | 
 d2 B | fdg | e2 c | Aec | B2 :|  