Design various chord structures to improve the overall harmony of the assigned musical composition.
C/F/G/ | A G F G | A2 z/ C/ F/G/ | A G F ^E |1 
 F2 z/ C/F/G/ :|2 F3 z |: c c/c/ c c | d c B2 | B B B c |1 A B c2 :|2 
 A G F/ :|  
X:1
L:1/4
M:4/4
K:F#min
 C/F/G/ |"Fm" A"C#7" G"Fm" F"C#7" G |"Fm" A2 z/ C/ F/G/ |"Fm" A"C#7" G"Fm" F"C#7" ^E |1 
"Fm" F2 z/ C/F/G/ :|2 F3 z |:"Fm" c c/c/ c c |"Bm" d c B2 |"C#7" B B B c |1"Fm" A B c2 :|2 
"Fm" A"C#7" G"Fm" F/ :|  