Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
M:2/4
K:C
['Gc cB/A/ Ge ed/e/ fd', 'ef g2 de f2 cd ef/e/']  
X:1
L:1/8
M:2/4
K:C
|: Gc cB/A/ | Ge ed/e/ | fd dc/d/ | ec cB/A/ | Gc cB/A/ | Ge ed/e/ | fd de/d/ | c/B/c/d/ c2 :: 
 ef g2 | de f2 | cd ef/e/ | dc d2 | ef g2 | de f2 | cd ef/e/ | d/c/B/d/ c2 :|  