Code not doing what I want it to do

Projects General Guidance
7 
#include <Keypad.h>
// LiquidCrystal - Version: Latest 
#include <LiquidCrystal.h>
char songnum[2];


int currentlength = 0;

const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};
byte rowPins[ROWS] = {5, A5, A4, A2}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {A1, A0, A3}; //connect to the column pinouts of the keypad

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

LiquidCrystal lcd(7,9,10,11,12,13); // the pins we use on the LCD
int P = 8;
void setup() {
    #define e 329.63
    #define d 293.66
    #define c 261.63
    #define g 392.00
    lcd.begin(16,2);
    lcd.print("choose a song:");
    lcd.setCursor(0, 1);
    lcd.cursor();
    Serial.begin(9600);
   songnum[1]=0;
   songnum[2]=0;
    while(currentlength<2){
     char key = keypad.getKey();
    key == NO_KEY;
    if (key != NO_KEY)
    {
      if ((key != '*')&&(key != '#'))
      { 
      lcd.print(key);
      songnum[currentlength] = key;
      currentlength++;
     
  }
}
}
}
void loop() {


    
      
     
     
    
     
     
  
      
      
    
    
      
    
     
        
      
  if ((currentlength==2)&&(songnum[1]==1)){
    tone(P, e, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, c, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, e, 250);
    delay(500);
    tone(P, e, 250);
    delay(500);
    tone(P, e, 500);
    delay(1000);
    tone(P, d, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, d, 500);
    delay(1000);
    tone(P, e, 250);
    delay(500);
    tone(P, g, 250);
    delay(500);
    tone(P, g, 500);
    delay(1000);
    tone(P, e, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, c, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, e, 250);
    delay(500);
    tone(P, e, 250);
    delay(500);
    tone(P, e, 500);
    delay(1000);
    tone(P, d, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, e, 250);
    delay(500);
    tone(P, d, 250);
    delay(500);
    tone(P, c, 1000);
    delay(1500);
   lcd.print(songnum[1]);
   currentlength++;
  }
  
    }