Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/16
M:2/4
K:Bb
['BcBA Bdfd b2bf d2>B2 g2ge c2>A2', 'B4 g2>e2 c2c2 cBcd', 'z2 F2 c6 de fgfe d2B2 b2f2']  
X:1
L:1/16
M:2/4
K:Bb
 F2 | BcBA Bdfd | b2bf d2>B2 | g2ge c2>A2 | BABc d2F2 | BcBA Bdfd | b2bf d2>B2 | g2ge c2>A2 | 
 B4 z2 :: F2 | d4 cdAc | B4 g2>e2 | c2c2 cBcd | BABc d2F2 | c4 BdAc | B4 g2>e2 | c2c2 cBcd | 
 B4 z2 :: F2 | c6 de | fgfe d2B2 | b2f2 edcB | c2g2f2e2 | d4 ceAc | B4 g2>e2 | c2c2 cBcd | B4 z2 :|  