I am trying to plot an audio signal on a 3D graph

I do not have a value for the z-axis and I am not sure where to begin. Any help would be greatly appreciated!

%current fft

function currentfft(player,y,Fs)
    sampleNumber=get(player,'CurrentSample');
    timerVal=get(player,'TimerPeriod');
    
    
    %Get channel one values for our window around the current sample number
    s1=y(floor(sampleNumber-((timerVal*Fs)/2)):floor(sampleNumber+((timerVal*Fs)/2)),1);
    
    n = length(s1);
    p1 = fft(s1); % take the fourier transform
    p2 = fft(p1); % take the fourier transform
    p3 = fft(p2,3,750);

    nUniquePts = ceil((n+1)/2);
    p3 = p3(1:nUniquePts); % select just the first half since the second half
    			 % is a mirror image of the first
    p3 = abs(p3); % take the absolute value, or the magnitude
    p3 = p3/n; % scale by the number of points so that
             % the magnitude does not depend on the length
             % of the signal or on its sampling frequency
    
    p3 = p3.^2;  % square it to get the power
    
    % multiply by two
    if rem(n, 2) % odd nfft excludes Nyquist point
        p3(2:end) = p3(2:end)*2;
    else
        p3(2:end -1) = p3(2:end -1)*2;
    end
    
    freqArray = (0:nUniquePts-1) * (Fs / n); % create the frequency array
        
    
    sz=25;
    c = linspace(1,10,length(freqArray));
    scatter(freqArray/2000, p3 )

 
    xlabel('Frequency (kHz)')
    ylabel('Power (watts)')
    title('Frequency vs. Power')
    axis([0 13 0 6]);

%this is the base code I have been using. I have tried implementing mesh and fsurf, but with no idea on how to set the z-axia correctly it was pointless.

[Zachary Bair]

I am hoping to have the graph react to the incoming frequancy like a music visualizer.