Just take the melody playing out of setup() which is only done once and put it in loop() which is done repeatedly:
*/
#include "pitches.h"
// notes in the melody:
int melody[] = {
NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_AS4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_C5,
NOTE_G4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_AS4, NOTE_G4, NOTE_F4, NOTE_G4, NOTE_G4, NOTE_G4, NOTE_F4, NOTE_F4, NOTE_DS4};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
4, 4, 4, 8, 4, 8, 2, 4, 4, 4, 4, 8, 4, 8, 2, 4, 4, 4, 4, 8, 4, 8, 1,8,8,4,8,4,3,3,4};
void setup() {
}
void loop() {
// iterate over the notes of the melody:
for (int thisNote = 0; thisNote < 32; thisNote++) {
// to calculate the note duration, take one second
// divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000/noteDurations[thisNote];
tone(9, melody[thisNote],noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.40;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(9);
}
}