void setup() {
  // put your setup code here, to run once:
pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  pinMode(6, INPUT);
  pinMode(7, INPUT);
  pinMode(8, INPUT);
  pinMode(9, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(8)==HIGH)
{
  tone(9,987,1000);
  }
     if(digitalRead(7)==HIGH)
{
  tone(9,880,1000);
  }
     if(digitalRead(6)==HIGH)
{
  tone(9,783,1000);
  }
     if(digitalRead(5)==HIGH)
{
  tone(9,698,1000);
  }
     if(digitalRead(4)==HIGH)
{
  tone(9,622,1000);
  }
     if(digitalRead(3)==HIGH)
{
  tone(9,554,1000);
  }
       if(digitalRead(2)==HIGH)
{
  tone(9,523,1000);
}

}