Compose tunes based on the given musical structure.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
M:2/4
K:D
 f | g2 e2 | dd/e/ df | g2 e2 | d3 :: a | b3 g | a3 f | g2 f2 | e/d/c/B/ Aa | b3 g | a3 f | g2 e2 | 
 d3 :|  