Generate music to the given chord progression.
'F', 'C7', 'F', 'C7', 'F', 'Bb', 'F', 'C7', 'F', 'Bb', 'F', 'C7', 'F'  
X:1
L:1/4
M:3/4
K:F
"F" A c f | c f a |"C7" g e c |"F" a f f | A c f | c f a |"C7" g c e |"F" f z z ::"Bb" b d b | 
"F" a c a |"C7" g c e |"F" f c f |"Bb" b d b |"F" a c/f/ a |"C7" g c/d/ e/c/ |"F" f z z :|  