Compose a musical work utilizing the given alphabet-based form and the provided motif.
X:1
L:1/16
M:2/4
K:Bb
['b2a2 b4 f2=e2 f4 d2c2 d4 B2A2', 'cdcB ABcA']  
X:1
L:1/16
M:2/4
K:Bb
|: b2a2 b4 | f2=e2 f4 | d2c2 d4 | B2A2 B2ed | c2cB A2AG | FAcA B4 :: cdcB ABcA | BcBA Bdfd | 
 cdcB ABcA | BdcA B4 :|  