Develop a music arrangement by incorporating the given alphabetical sequence and the provided motif.
X:1
L:1/8
M:9/8
K:Dmix
['AdA GAG', 'GEC F2 D E/F/GE DE/F/G A3 AFD', 'GEC f2 d cAG F2 G A3']  
X:1
L:1/8
M:9/8
K:Dmix
 AdA GAG F2 G | A3 AFD EFG | AdA GAG FAd | c3 AGE GEC :: F2 D E/F/GE DE/F/G | A3 AFD EFG | 
 F/G/AD E/F/GE DAd | c3 AGE GEC :: f2 d cAG F2 G | A3 AFD EFA | f2 A dge fAB | cec AGE GEC :|  