Construct a compatible series of chord changes that support the given music piece.
c'/b/"^A" |: af cA | PcB Bg/f/ | ec' c'a/g/ | fc' c'a/g/ | fc AF | PcB Bg/f/ | 
 ec a>g |1 fa fc'/b/ :|2 fa f z"^B" |:[K:C] g2 g/a/g/f/ | e/g/c'/e/ g2 | 
 f/e/d/^c/ dg | e/d/c/B/ c2 | g2 g/a/g/f/ | e/g/c'/e/ g2 | f/e/d/c/ Bg |1 
 ce c z :|2 ce c"_> Teil A" c'/_b/"^C" |:[K:Bb] df =e/f/g/f/ | b3 a | 
 a>g a/g/a/g/ | c3 d | ef/e/ de | a3 g | g>f g/f/g/f/ | d3 B | df =e/f/g/e/ | d'3 c' | 
 c'>b c'/b/c'/b/ | g3 b | Pae Pae | Pgd Pgd | ef ga | bc' d'2 | Pae Pae | 
 Pgd Pgd | ef ga |1 bd/f/ B z :|2 bf b z |]  
X:1
L:1/8
M:2/4
K:F
 c'/b/"^A" |:"F" af cA |"C7" PcB Bg/f/ | ec' c'a/g/ |"F" fc' c'a/g/ | fc AF |"C7" PcB Bg/f/ | 
 ec a>g |1"F" fa fc'/b/ :|2"F" fa f z"^B" |:[K:C]"G7" g2 g/a/g/f/ |"C" e/g/c'/e/ g2 | 
"G7" f/e/d/^c/ dg |"C" e/d/c/B/ c2 |"G7" g2 g/a/g/f/ |"C" e/g/c'/e/ g2 |"G7" f/e/d/c/ Bg |1 
"C" ce c z :|2"C" ce"C7" c"_> Teil A" c'/_b/"^C" |:[K:Bb]"Bb" df =e/f/g/f/ | b3 a | 
"F7" a>g a/g/a/g/ | c3 d | ef/e/ de | a3 g |"Bb" g>f g/f/g/f/ | d3 B | df =e/f/g/e/ |"Bb7" d'3 c' | 
"Eb" c'>b c'/b/c'/b/ | g3 b |"F7" Pae Pae |"Bb" Pgd Pgd |"F7" ef ga |"Bb" bc' d'2 |"F7" Pae Pae | 
"Bb" Pgd Pgd |"F7" ef ga |1"Bb" bd/f/ B z :|2"Bb" bf b z |]  