Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
['', 'DG GF/E/ DB BA/B/ cA AG/A/ BG', 'DG BA/B/ AG E2 GF/E/ DF'  
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
 DG |: GF/E/ DB | BA/B/ cA | AG/A/ BG | G z DG :: BA/B/ AG | E2 GF/E/ | DF AB | AG DG | BA/B/ AG | 
 E2 GF/E/ | DF AF | G z DG :|  