Produce a piece of music while following the specified chord sequence.
'F', 'C7', 'Bb', 'F', 'C7', 'F', 'C7', 'F'  
X:1
L:1/8
M:23/44
K:F
|:"F" [AF][cA] [cA][BG] | [AF]2 z2 | [AF][cA] [cA][AF] [dB][cA] |"C7" [cA]2 [BG][AF] | [GE]2 z2 | 
"Bb" [dB][dB] [dB][fd] [ec][dB] |"F" [dB]2 [cA][BG] | [AF]2 z |"C7" [cE][cE] [cE]2 [BG]2 | 
"F" [AF]2 z2 z2 ::"C7" [GE][BG] [BG][AF] | [GE]2 z2 | [GE][BG] [BG][GE] [cA][BG] | 
"F" [AF][cA] [cA][BG] | [AF]2 z2 :|  