#define buzz 13
#define t 100 // the time of each noise
#define d 200 // the time between each noise


void setup() 
{
  // put your setup code here, to run once:
  pinMode(buzz, OUTPUT);
  Serial.begin(9600);
}

void loop() 
{
  // put your main code here, to run repeatedly:
  String song[] = {"C3", "1", "CS2"}; // this is the song
  int size = sizeof(song)/sizeof(song[0]); // gets the size of the song
  for(int i = 0; i < size; i++) // repeats for each key
  {
    delay(100);
    note(song[i]); // plays each key
  }
  delay(1000);
}

void note(String inp) // this it a way to quickly play each key without remembering each of their frequencies
{
  //Serial.println(key);
  char key;
  if(inp == "1")
  {
    delay(100); // 1 will be a blank space
    //Serial.print("- ");
  }
  else 
  {
    Serial.println(key);
    char octive = (inp[(inp.length()-1)]); // gets the octive
    //Serial.println(key[0]);
    int oNum = 0;
    if (octive == '1')
    {
      oNum = 1;
    }
    else if (octive == '2')
    {
      oNum = 2;
    }
    else if (octive == '3')
    {
      oNum = 3;
      Serial.print("a ");
    }
    else if (octive == '4')
    {
      oNum = 4;
    }
    else if (octive == '5')
    {
      oNum = 5;
    }
    else if (octive == '6')
    {
      oNum = 6;
    }
    else if (octive == '7')
    {
      oNum = 7;
    }
    else if (octive == '8')
    {
      oNum = 8;
    }
    else
    {
      oNum = 0;
    }
    Serial.println(oNum);
    int x = pow (2, oNum-1); // changes it to a the value of how it affects each key
    if (inp[1] != octive) // checks if the key is sharp
    {
      key = inp[0] + inp[1];
    }
    else // checks if the key isnt sharp
    {
      key = inp[0];
    }
    Serial.println(key);
    Serial.println();
    if(key == "C")
    {
      tone(buzz, 131*x, t);
      //Serial.print("C ");
    }
    else if(key == "CS")
    {
      tone(buzz, 139*x, t);
      //Serial.print("CS ");
    }
    else if(key == "D")
    {
      tone(buzz, 147*x, t);
    } 
    else if(key == "DS")
    {
      tone(buzz, 156*x, t);
    }
    else if(key == "E")
    {
      tone(buzz, 165*x, t);
    }
    else if(key == "F")
    {
      tone(buzz, 175*x, t);
    }
    else if(key == "FS")
    {
      tone(buzz, 185*x, t);
    }
    else if(key == "G")
    {
      tone(buzz, 196*x, t);
    }
    else if(key == "GS")
    {
      tone(buzz, 208*x, t);
   }
    else if(key == "A")
    {
      tone(buzz, 220*x, t);
    }
    else if(key == "AS")
    {
      tone(buzz, 233*x, t);
    }
    else if(key == "B")
    {
      tone(buzz, 247*x, t);
    }
  }

}