Construct a musical work by incorporating the designated motif and the alphabet-based framework.
X:1
L:1/8
M:6/8
K:Bb
['B FDE', 'B2 f fdB fg_a |{a} g3 g2']  
X:1
L:1/8
M:6/8
K:Bb
 B | FDE F2 B | FDE F2 B | cec BdB | cAF F2 B | FDE F2 B | FDE Fce | dcB FBA | B2 B B2 :: f | 
 fdB fg_a |{a} g3 g2 g | gec gab | b3 a2 g | fbf dfd | ege dfe | dcB FBA | B2 B B2 :|  