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
['A2 FA GE AG FD AF', 'A,C de dc Ac eg fg ef']  
X:1
L:1/8
M:4/4
K:D
|: A2 FA GE AG | FD AF GE A,C | A2 FA GE AG | FD AF GE A,C :: de dc Ac eg | fg ef dc AG | 
 FG Ad =cA =cd | =cA GF G2 FG :|  