Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
Q:1/2=80
M:2/2
K:G
['GB dg f2 ed (3efg', '(3bag gg']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:G
 GB dg f2 ed | (3efg dB (3cde cA | GB dg f2 ed | (3efg A^c d4 :: (3bag gg (3bag gg | 
 (3dcB BB (3dcB BB | (3BAG GG (3BAG GG | (3dcB (3cBA G4 :|  