How do I pass 1 of multiple defined arrays to a function?

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C++

Arduino

I'm building an Arduino doorbell and have individual arrays for each song that contain song notes to play on a speaker. Once the song is selected and downloaded to Arduino, I want the doorbell interrupt to play the song. What I can't figure out is how to pass the address of the song array to a common "PLAY" function without a separate function to play each song.

The error I am getting is

error: cannot convert 'const int (*)[8]' to 'int*' in assignment

What I have tried:

I tried using POINTERS and REFERENCING but, being unfamiliar with how to use them, they don't seem to work.
My relevant code:

void ISR_setSong() {    // this is defined button interrupt  
  // This switch statement identifies the selected song to play

   switch (song) {
    case 1:
      tuneToPlay = &song1;    // Globally defined as int *tuneToPLay 

      break;
    case 2:
      tuneToPlay = &song2;
      break;
    default:
       tuneToPlay = song1;
      break;
  }

I changed this to be inline code because an interrupt function should not call another function (as I understand).

void ISR_playSong(int tuneToPlay[], int beatsToPlay[]) {
  int allNotes = int(tuneToPlay[0]);  // cast first element to integer
  for (int thisNote = 1; thisNote < allNotes; thisNote++) {
    int noteDuration = 1000 / beatsToPlay[thisNote];
    tone(speakerPin, tuneToPlay[thisNote], noteDuration);  //play the note
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    noTone(speakerPin);  // stop the tone playing:
    buttonFlag = 1;      // indicate the ISR has been executed
  }