Design a musical arrangement using the alphabetical representation of the given sequence and the supplied motif.
X:1
L:1/8
M:4/4
K:D
['ed cAAG', '(3Bcd ed']  
X:1
L:1/8
M:4/4
K:D
|: de | f2 ed cAAG | AB (3cBA dcde | (3fgf ed cAAG | EFGE D2 :: ef | gfed (3Bcd ed | eaag eaaf | 
 g2 ed (3Bcd ed | eage d2 :|  