Create tunes that fit within the given musical structure.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
M:4/4
K:Bb
 dc | BFDF BFDF | BABc dcd=e | fcAc fcAc | fgag fedc | BFDF BFDF | BABc dcd=e | .f2 ag fedc | 
 .B2 .d2 .B2 || ba | gecA FAcg | fdBF DFBd | eAgf eAgf | dBgf dfba | gecA FAcg | fdBF DFBd | 
 A2 ag fedc | B2 d2 [DB]2 ||  