Design a musical arrangement using the alphabetical representation of the given sequence and the supplied motif.
X:1
L:1/8
Q:3/8=120
M:9/8
K:D
['', 'D2 D D2 B', 'CB,A, F2 A G2 B', 'CB,A, a2 f g2 e f2 d']  
X:1
L:1/8
Q:3/8=120
M:9/8
K:D
 A,/B,/C/ |: D2 D D2 B AFD | B,2 E EFD CB,A, | D2 D D2 B AFA | d2 D DED CB,A, :: F2 A G2 B AFD | 
 B,2 E E2 D CB,A, | F2 A G2 B AFA | d2 D DED CB,A, :: a2 f g2 e f2 d | cde e2 f gfe | afa geg fdf | 
 d2 d A2 G FED :|  