Construct melodic lines keeping the provided musical organization in mind.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
Q:1/2=80
M:2/2
K:Bb
 B2 f>f (3fgf (3edc | d2 b>b b2 a2 | g2 f2 e2 d2 | c2 c>c cedc | B2 f>f (3fgf (3edc | 
 d2 b>b b2 b2 | ba/ z/ ag/ z/ gf/ z/ f=e/ z/ | f2 f>f f2 z :: f2 e>e e2 A/B/c/d/ | 
 e2 d>d d2 (3Bdf | ggff eedd | c2 c>c c2 z F | B2 d>B G2 e>c | A2 f>d B2 g>e | dbge d2 f/e/d/c/ | 
 B2 B>B B4 :|  