Can I Interrupt on any keypress on this keypad? I'm learning how to write code interrupt code. I just experimented with my first toy example that I got from here: 

const byte ledPin = 13;
const byte interruptPin = 2;
volatile byte state = LOW;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(interruptPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptPin), blink, CHANGE);
}

void loop() {
  digitalWrite(ledPin, state);
}

void blink() {
  state = !state;
}


Now I'm trying to incorporate interrupts into my own project. I have a circuit that looks like this using an Arduino Uno Wifi Rev2, Membrane 3x4 Matrix Keypad, a buzzer, some resistors and an RGB LED: 



Can I write code such that it interrupts any time any of the keys is pressed (and I can still tell which key is pressed)? How would I do that?
No, you can't. Owing to the fact that you have to manually cycle through each row (or column, depending on which way you are holding your head at the time) in order to read which keys are pressed there is no way to relate a button to an interrupt.

The only possible way would be to use an external keypad interface chip (you could roll your own with another Arduino) which has an interrupt signalling facility in it.