Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
M:6/8
K:G
['BGB def gfe dBG', 'G3 Bee edB def g2 a bag']  
X:1
L:1/8
M:6/8
K:G
 G3 BGB | def gfe | dBG GFG | AFD DFA | GGG BGB | def gfe | dBG FGA | AGG G3 |: Bee edB | 
 def g2 a | bag agf |1 gfg edB :|2 gfg e2 B ||  