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:4/4
K:G
 B2 Ac B G3 | BGdG DGGA | B2 Ac B G3 | dBAG DGGA :| G2 Bd gagf | d2 cA dBcA | G2 Bd g2 ag | 
 fdcA BG G2 :|  