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:1/16
M:2/4
K:D
|: d4 A4 | f4 d4 | a2af d2df | A2Bc d4 :: ceaf fece | edBd dcBA | ceaf fece | e2dB A4 :|  