Construct a musical arrangement using the specified alphabetical sequence and the given motif as a foundation.
X:1
L:1/8
M:4/4
K:Bb
['Bcde fBAB gBaB bBAB GBFB EBDB', 'B2 bBAB bBAB gabg gfed g^fgd eded']  
X:1
L:1/8
M:4/4
K:Bb
 F2 | Bcde fBAB | gBaB bBAB | GBFB EBDB | ecAc BAGF | Bcde fBAB | gBaB bBAB | GBFB EBDB | 
 ecAc B2 :: bBAB bBAB | gabg gfed | g^fgd eded | cdec BAGF | Bcde fBAB | gBaB bBAB | GBFB EBDB | 
 ecAc B2 z2 :|  