arduino 2 analog channels

#include "pitches.h"
#include <SPI.h>
#include <SD.h>
#include <TMRpcm.h>

const int buttonPin1 = A2; //serie 1 (eerste 5 knoppen)
const int buttonPin2 = A3; //serie 2 (tweede 5 knoppen)
File myFile;
const int chipSelect = 4; //pin number sd card
TMRpcm tmrpcm; //WAV afspeel object uit TMRpcm library
const int pinSpeaker = 9;
const int delayTijd = 100; //delaytime


void setup() {
    //initilize buttons
    pinMode(buttonPin1, INPUT_PULLUP);
    pinMode(buttonPin2, INPUT_PULLUP);
    Serial.begin(9600);
    pinMode(SS, OUTPUT);

    //initialize SD card connection
    if (!SD.begin(chipSelect)) {
        Serial.println("initialization SD card failed!");
        return;
    }

    Serial.println("initialization SD card done.");
}


void loop() {
    delay(delayTijd);
    // read the state of the switch into a local variable:
    int readingPin1 = analogRead(buttonPin1);
    //delay(20);
    int readingPin2 = analogRead(buttonPin2);

    //print analog values
    Serial.println(readingPin1);
    Serial.println(readingPin2);

    //KNOP 1
    if ((readingPin1 >= 956)&&(readingPin1 <= 957)){
        Serial.println("knop 1");
    playwav();
    }

    //KNOP 2
    else if ((readingPin1 >= 602)&&(readingPin1 <= 604)){
        Serial.println(" knop 2");
    playwav();
    }

    //KNOP 3
    else if ((readingPin2 >= 968)&&(readingPin2 <= 970)){
        Serial.println(" knop 3");
    playwav();
    }

    //KNOP 4
    else if ((readingPin1 >= 329)&&(readingPin1 <= 330)){
        Serial.println(" knop 4");
    playwav();
    }

    //KNOP 5
    else if ((readingPin2 >= 849)&&(readingPin2 <= 853)){
        Serial.println(" knop 5");
    playwav();

    }
    //KNOP 6
    else if ((readingPin2 >= 897)&&(readingPin2 <= 899)){
        Serial.println(" knop 6");
    playwav();
    }
    //KNOP 7
    else if ((readingPin2 >= 715)&&(readingPin2 <= 717)){
        Serial.println(" knop 7");
    playwav();
    }
    //KNOP 8
    else if ((readingPin1 >= 523)&&(readingPin1 <= 526)){
        Serial.println(" knop 8");
    playwav();
    }
    //KNOP 9
    else if ((readingPin1 >= 980)&&(readingPin1 <= 982)){
        Serial.println(" knop 9");
    playwav();
    }
    //KNOP 10
    else if ((readingPin2 >= 933)&&(readingPin2 <= 936)){
        Serial.println(" knop 10");
    playwav();
    };
}



//Plays a .WAV file from the SD card
void playWav(char* filename) {
    if (tmrpcm.isPlaying() != 1) {
        tmrpcm.speakerPin = pinSpeaker;
        pinMode(10, OUTPUT);
        digitalWrite(10, HIGH);
        pinMode(pinSpeaker,OUTPUT);

        Serial.println("Reading WAV from SD CARD = ok");
        Serial.println("Playing WAV:");
        tmrpcm.setVolume(6);
        Serial.println(filename);
        tmrpcm.play(filename);
        while (tmrpcm.isPlaying() == 1) {
            delay(50);
        }
    }
}