Construct a harmonious chain of chord progressions that enhance the presented musical piece.
e d c | g3/2 g/ g | d f e | c z G |:"^A" e z B | c z a | (!>!g3 | g) z e | 
 g z f | d z ^d | (!>!e3 | c) z G | e z B | c z a | (g3 | g) z e | g z f | 
 (d2 e) | c3/2 c/ c |1 c z G :|2 c z z |:[K:G]"^B" d3 | g f e | !>!d3 | d e B | c3 | 
 a g f | (e2 d) | (e2 d) | !>!d3 | g f e | !>!d3 | d e B | (c2 d) | (b2 a) | 
 g3/2 g/ g |1 g z z :|2 g z"_>Teil A" G ||[K:F]"^C" c3 | f3 | c3 | a3 | B3 | (g2 a) | 
 (g2 f) | f3 | c3 | f3 | c3 | a3 | B c d | (a2 g) | f z e | f"_>Teil A" z z |]  
X:1
L:1/4
M:3/4
K:C
"C" e d c | g3/2 g/ g |"G7" d f e |"C" c z G |:"^A""C" e z B |"F" c z a |"C" (!>!g3 | g) z e | 
"G7" g z f | d z ^d |"C" (!>!e3 | c) z G | e z B |"F" c z a |"C" (g3 | g) z e |"G7" g z f | 
 (d2 e) |"C" c3/2 c/ c |1 c z G :|2 c z z |:[K:G]"^B""D7" d3 | g f e |"G" !>!d3 | d e B |"D7" c3 | 
 a g f |"G" (e2 d) | (e2 d) |"D7" !>!d3 | g f e |"G" !>!d3 | d e B |"D7" (c2 d) | (b2 a) | 
"G" g3/2 g/ g |1 g z z :|2 g z"_>Teil A" G ||[K:F]"^C""F" c3 | f3 | c3 | a3 |"C7" B3 | (g2 a) | 
"F" (g2 f) | f3 | c3 | f3 | c3 | a3 |"C7" B c d | (a2 g) |"F" f z e | f"_>Teil A" z z |]  