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:2/2
K:D
 A2 FA B2 AB | d2 fe dBBd | ADFA B2 AB |1 dBAF FEDF :|2 dBAF FE D2 |: a2 ab afef | a2 bf afef |1 
 a3 b afef | defe dB B2 :|2 a2 af b2 af | egfe dB B2 ||  