Design agreeable chord sequences that suit the presented tune
"^A" AA (A/G/)F | cc (c/B/)A | dG GA | G2 c>B | AA (A/G/)F | cc (c/B/)A | 
 dG/B/ AG | FF F z ::[K:C]"^B" Gc Gc | (Ad) d2 | ff (f/e/)d | ee (e/d/)c | 
 Gc Gc | (Ad) d2 | ff f/e/d | ce c"_>Teil A" z ::[K:Bb]"^C" B2 F>F | GG .F2 | 
 B>B AB | AB c2 | A2 F>F | FG .F2 | A>A GA | Bc d2 | B2 F>F | GG .F2 | B>B AB | c2 G2 | 
 e>e dc | B>B AG | F2 GA | Bd B z :|  
X:1
L:1/8
M:2/4
K:F
"F""^A" AA (A/G/)F | cc (c/B/)A |"Gm" dG GA |"C7" G2 c>B |"F" AA (A/G/)F | cc (c/B/)A | 
"Gm" dG/B/"C7" AG |"F" FF F z ::[K:C]"^B""C" Gc Gc |"Dm" (Ad) d2 |"G7" ff (f/e/)d |"C" ee (e/d/)c | 
 Gc Gc |"Dm" (Ad) d2 |"G7" ff f/e/d |"C" ce c"_>Teil A" z ::[K:Bb]"^C""Bb" B2 F>F | GG .F2 | 
 B>B AB |"F7" AB c2 | A2 F>F | FG .F2 | A>A GA |"Bb" Bc d2 | B2 F>F | GG .F2 | B>B AB |"Cm" c2 G2 | 
"Eb" e>e dc |"Bb" B>B AG |"F7" F2 GA |"Bb" Bd B z :|  