Develop a music arrangement by incorporating the given alphabetical sequence and the provided motif.
X:1
L:1/8
Q:1/4=112
M:9/8
K:Bb
['F D/E/FD', 'B,2 F BdB edg fdB A2 F']  
X:1
L:1/8
Q:1/4=112
M:9/8
K:Bb
"^Allegretto" F | D/E/FD BFE D2 B, | D/E/FD ECC C2 F | D/E/FD Bcd D2 B, | D/E/FC DB,B, B,2 :: F | 
 BdB edg fdB | A2 F A/B/cc c2 d | Bcd fga bag | dbd c2 B B2 :|  