Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
M:4/4
K:E
['ga bg', 'ga bg g/g/g ga ge']  
X:1
L:1/8
M:4/4
K:E
|: GB B/B/B eB eg | a2 ga bg fe | c3 e cB GB | c2 BG F3 E | Fc c/c/c ec eg | a2 ga be ga | 
 bg g/g/g ga ge |1 Bc ef e3 B :|2 Bc ef e2 ga |: bg g/g/g ga ge | Bc ef ge ga | bg g/g/g ga ge | 
 fe df eB AB | Fc c/c/c ec eg | a2 ga be ga | bg g/g/g ga ge | Bc ef e2 ga :|  