Design a musical arrangement using the alphabetical representation of the given sequence and the supplied motif.
X:1
L:1/4
Q:3/4=100
M:6/4
K:Bb
['f3/2 g/ f', 'd G']  
X:1
L:1/4
Q:3/4=100
M:6/4
K:Bb
 B | f3/2 g/ f d3/2 c/ B | e g a b2 g | f d B E G c | A3 F2 c | f3/2 g/ f d c B | e f g _a2 g | 
 f A c F B c | d3 B2 :: A/B/ | c3/2 d/ B A d G | F2 E D2 f | g B d G c d | d3 c2 c | 
 f3/2 g/ f d c B | e f g _a2 g | f A c F B c | d3 B2 :|  