Anyone tell me where i'm going wrong with this sketch? Both arcs are displaying the frequency response for the bass guitar, whereas i want one of them to show frequency of the shaker.

2. import ddf.minim.*;
3. import ddf.minim.analysis.*;
4. AudioPlayer player, player1;
5. Minim minim;
6. FFT fft;
7. 
   
8. int bufferSize = 512;
9. int fftSize = floor(bufferSize*.5f)+1;
10. float ai = TWO_PI/fftSize;
11. 
    
12. void setup() {
13.   size(400, 400, P3D);
14.   smooth();
15.   noStroke();
16.   colorMode(HSB, fftSize, 10, 10);
17. 
    
18.   minim = new Minim(this);
19.   player = minim.loadFile("bass guitar.mp3");
20.   player1 = minim.loadFile("shaker.mp3");
21. 
    
22.   player.play();
23.   player.loop();
24.   player1.play();
25.   player1.loop();
26.   fft=new FFT(player.bufferSize(), player.sampleRate());
27.   fft=new FFT(player1.bufferSize(), player1.sampleRate());
28. 
    
29. 
    
30.   smooth();
31. }
32. 
    
33. void draw() {
34.   background(0, 0, 100);
35.   fft.forward(player.mix);
36. 
    
37.   for (int i = 0; i < fftSize; i++) {
38.     float band = fft.getBand(i);
39.     {
40. 
    
41.       fill(i, 150+100*(band), 100, 100);
42. 
    
43.       arc(100, 100, 50+band * (i+1)/2, 50+band * (i+1)/2, ai*i, ai*(i+1));
44.       
45. 
    
46.       fill(i, 150+100*(band), 100, 100);
47. 
    
48.       arc(200, 200, 50+band * (i+1)/2, 50+band * (i+1)/2, ai*i, ai*(i+1));
49.     }
50.   }
51. }
52. 
    
53. void stop()
54. {
55.   player.close();
56.   player1.close();
57.   minim.stop();
58.   super.stop();
59. }