Develop a music arrangement by incorporating the given alphabetical sequence and the provided motif.
X:1
L:1/8
Q:1/8=232
M:4/4
K:Bb
['bf dB ge cB AB FB DF', 'B2 F2 Bc dB ec AF cd']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:Bb
|: (3(fga) | bf dB ge cB | AB FB DF Bd | =Bc Gc _Bd gf | =eg fe f2 ga | bf dB ge cB | AB FB DF Bd | 
 =Bc G_B Ag fA | Bb fd B2 :: F2 | Bc dB ec AF | cd ec gf df | g^f ge cb =eg | f=e fg f2 (3(fga) | 
 bf dB ge cB | AB FB DF Bd | =Bc G_B Ag fA | Bb fd B2 :|  