Compose a piece of music that combines the given melodic theme with the assigned alphabetical pattern.
X:1
L:1/8
M:4/4
K:Bb
['B2 fd e2 ge fbab', 'fd e2']  
X:1
L:1/8
M:4/4
K:Bb
 F2 | B2 fd e2 ge | fbab afdB | c2 ec dfdB | edec BAGF | B2 fd e2 ge | fbab afdf | g/a/b ge dfdB | 
 c/d/e cA B2 :: F2 | f2 fd e2 ec | dfdB cAGF | fbfd egec | BfdB cAGF | B2 fd e2 ge | fbab afdf | 
 g/a/b ge dfdB | c/d/e cA B2 :|  