Construct congruent chords that enhance the existing musical piece.
Fd c4 | Ec B4 | db ag fe | ag fe dc | Fd c4 | Ec B4 | db ag fe | 
 f2 f2 z2 :|  
X:1
L:1/8
M:3/4
K:F
"F" Fd c4 |"C7" Ec B4 |"Bb" db ag"C7" fe |"F" ag fe dc | Fd c4 |"C7" Ec B4 |"Bb" db"C7" ag fe | 
"F" f2 f2 z2 :|  