Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:6/8
K:Bb
['ABc c2 d c2 B', 'fdf ece dBd cAF']  
X:1
L:1/8
M:6/8
K:Bb
 ABc c2 d | c2 B cAF | BcB ded | BcB ded | ABc c2 d | c2 B A2 A | Bcd e2 d | cBA B3 :: fdf ece | 
 dBd cAF | B2 B dcB | A2 B c3 | fdf ece | dBd cAF | dcB gfe | dec B3 :|  