Incorporate the given motif and use the alphabetical representation of the specified musical sequence to compose a distinctive musical piece.
X:1
L:1/4
M:6/4
K:Bb
['F B2 B B b g f', 'B,2 F B2 B B3/2 c/B/_A/ G']  
X:1
L:1/4
M:6/4
K:Bb
 F | B2 B B b g | f d B A2 B | c d e d c B | c A F F2 F | B2 B B b g | f d B G2 F | G e d c B A | 
 B F D B,2 :: F | B2 B B3/2 c/B/_A/ | G E E G B e | c2 c c3/2 e/c/B/ | A F F A c f | 
 .g (e c) .f (d B) | .e (c B) A3/2 G/ F | G e d c B A | B F D B,2 :|  