Develop tunes following the predetermined chord changes.
'C7', 'F', 'C7', 'F', 'C7', 'F', 'G7', 'C', 'C', 'F', 'C7', 'F', 'F', 'Gm', 'C7', 'F', 'F', 'F7', 'Bb', 'F7', 'Bb', 'F7', 'Bb', 'F', 'C7', 'F', 'Bb', 'F7', 'Bb', 'F7', 'Bb'  
X:1
L:1/8
M:2/4
K:F
 A/B/ |:"C7" AG cG/A/ |"F" GF cf/f/ |"C7" ee dd |"F" dc AA/B/ |"C7" AG cG/A/ |"F" GF cc/A/ | 
"G7" Ge d=B |1"C" cc cA/B/ :|2"C" cc cc |:"F" !>!fe/d/ !>!cd/A/ |"C7" BE EG | !>!ed/c/ !>!Bc/G/ | 
"F" AF Fc |"F" !>!ag/f/ !>!cf/e/ |"Gm" dg gg/f/ |"C7" eB dc |1"F" cA Ac :|2"F" cA A z |: 
[K:Bb]"F7" ef e>c |"Bb" de d>b |"F7" a/a/e a/a/e |"Bb" d/e/f/g/ fd |"F7" ef e>c |"Bb" de df/d/ | 
"F" ca"C7" f=e |"F" ff f z ::"Bb" fd/e/ fd |"F7" eg Ac/d/ | eg AG/A/ |"Bb" Bd fd/e/ | fd/e/ fd | 
"F7" eg cc/d/ | eg Af |"Bb" BB B z :|  