Formulate harmonious chords that work in tandem with the presented music.
"^A" df df | c2 ce | c2 eg | f2 d2 | df df | c2 Ac |1 Bc d=e | f2 F2 :|2 
 fe dc | BB B z |:[K:F]"^B" dd/^c/ df | c2 Af | e2 Bd | c2 AF | 
 dd/^c/ de | f2 ed | cB AG | F2"_>Teil A" f2 :|[K:Eb]"^C" e2 d2 | c2 B2 | 
 e3 d/c/ | B2 G2 | c2 c2 | c3 e | dc B>A | GB cB | e2 d2 | c2 B2 | e3 f/e/ | 
 d2 c2 | B3 B/c/ | B3 B/c/ | Bc de | fg a2 | B3 B/c/ | B3 B/c/ | 
 B=B cd | ee e z |]  
X:1
L:1/8
M:2/4
K:Bb
"^A""Bb" df df |"F7" c2 ce | c2 eg |"Bb" f2 d2 | df df |"F" c2 Ac |1"C7" Bc d=e |"F7" f2 F2 :|2 
"F7" fe dc |"Bb" BB B z |:[K:F]"^B""Bb" dd/^c/ df |"F" c2 Af |"C7" e2 Bd |"F" c2 AF | 
"Bb" dd/^c/ de |"F" f2 ed |"C7" cB AG |"F" F2"_>Teil A" f2 :|[K:Eb]"^C""Eb" e2 d2 | c2 B2 | 
 e3 d/c/ | B2 G2 |"Ab" c2 c2 | c3 e |"Bb7" dc B>A |"Eb" GB cB | e2 d2 | c2 B2 | e3 f/e/ | 
"Ab" d2 c2 |"Bb7" B3 B/c/ |"Eb" B3 B/c/ |"Bb7" Bc de | fg a2 | B3 B/c/ |"Eb" B3 B/c/ | 
"Bb7" B=B cd |"Eb" ee e z |]  