code in work for final project

int notes [] = {262,294,330,349,392,440};

void setup() {
Serial.begin(9600);

}

void loop() {

int keyVal = analogRead (A0);
Serial.println(keyVal);

if(keyVal == 1023) {tone(8, notes[0]);
}
else if(keyVal >= 1000 && keyVal <= 1020) {tone(8, notes[1]);
}
else if(keyVal >= 50 && keyVal <= 60) {tone(8, notes[2]);
}
else if(keyVal >= 330 && keyVal <= 345) {tone(8, notes[3]);
}
else if(keyVal >= 100 && keyVal <= 110) {tone(8, notes[4]);
}
else if(keyVal >= 505 && keyVal <= 515) {tone(8, notes[5]);
}
else if(keyVal >= 990 && keyVal <= 1010) {tone(8, notes[6]);
}

else{noTone(8);
}
}