#include <Keypad.h>

const uint8_t ROWS = 4;
const uint8_t COLS = 3;
char keys[ROWS][COLS] = {
  { '1', '2', '3' },
  { '4', '5', '6'},
  { '7', '8', '9' },
  { '*', '0', '#' }
};

uint8_t colPins[COLS] = { 5, 4, 3 }; // Pins connected to C1, C2, C3, 
 uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

 void setup() {
 Serial.begin(9600);
 }

 void loop() {
  char key = keypad.getKey();

  if (key == '1') 
  {
  tone(13 , 100 , 500);
 }
 if (key == '2')
 {
  tone(13 ,500 , 300);
 }
 if(key =='3')
 {
    tone(13 ,1000 , 400);
 }
 if(key =='4')
 {
   tone(13 ,1500 , 450);
 }
 if(key =='5')
 {
  tone(13, 2000, 550);
 }
 if(key == '6')
 {
  tone(13, 2500, 600);
 }
 if(key == '7')
 {
  tone(13,3000,650);
 }
 if(key == '8')
 {
  tone(13,3500,700);
 }
 if(key == '9')
 {
  tone(13,4000,750);
 }
 if(key == '*')
 {
  tone(13,4500,8000);
 }
 if(key == '0')
 {
  tone(13,5000,1150);
 }
 if(key == '#')
 tone(13,5500,1500);
}