Arduino audio playback without SD card not working?

I want to create a circuit that plays mainly 2 audio, one when it gets power and another audio by pressing a button. I want to create it without SD card. Library used is PCM. Here is the code sample.

#include <PCM.h>

const unsigned char sample[] PROGMEM = {
  0,6,14,22,30,38,46,54,60,68,74,82,90,98,106,114,112,
  };

void setup()
{
    startPlayback(sample, sizeof(sample));
}

void loop()
{
 
}

if anyone knows how to play audio in arduino using button (without sd card) help me...

Solved : By adding INPUT_PULLUP

const unsigned char sample2[] PROGMEM = {
    100,96,84,72,60,58,46,34,20,18,4,12,20,38,46,54,62,
};

int inPin = 7;
void setup()
{
    pinMode(inPin, INPUT_PULLUP);
}

int lastPin = HIGH;  // HIGH means not pressed for Pullup Inputs
void loop()
{
    int pin = digitalRead(inPin);

    if (pin == lastPin)
        return;

    if (pin == HIGH) {
       startPlayback(sample1, sizeof(sample1));
    } else {
       startPlayback(sample2, sizeof(sample2));
    }

    lastPin = pin;
}