Compose harmonic sequences within the established musical context.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/4
M:2/4
K:Bbmin
 B f f e | d e d c | A d c c/B/ | A B B2 :: d/c/d/e/ d d/c/ | A B B/A/B/c/ | d/c/d/e/ d d/c/ | 
 A B B2 :|  