Design a melodic composition using the outlined structure while keeping within the customary elements of the given genre.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
M:2/4
K:G
 GABc | d/e/d/^c/ dB | GABc | d2 [gd]2 :: [fc]aAf | (g/a/).g/.f/ gg | caAf | g2 [gd]2 :|  