The output of an audio opamp needs to swing up and down. Then the (+) input is biased at half the supply voltage. Then the output swings more positive and less positive.Ground is usually 0V. There is no VEE.
If you have a positive supply (VCC) and a negative supply (VEE) then ground is the 0V between them which biases the (+) input of the opamps and their outputs can swing up (positive) and down (negative).
Thank you for making your schematic much clearer. Because I had trouble seeing your resistor values then some capacitor values are wrong: C12, C13, C19, C20, c31 and C32. The capacitor values should be calculated for the frequencies they must pass.
Your filter at the bottom has its highpass and lowpass frequencies too close to each other.
You have the lowpass filters first so the levels are cut to 1/50th the input level.
Also you have the gain of each filter at 2 causing a peak when the R and C values are the same.
I show the 1/50th with peaks and I show my corrections: