Inspired by the need for an annoying tune player here I thought I would add this embellishment that uses a piezo on pwm pin 10 (other piezo lead goes to ground) to generate the tones and adds attack and decay in the loop for a super cheesey trumpet effect. Enjoy 
/* PWM Melody via DCB*/
//pin 10 pwm sound with pitch and volume control
#define piezoPin 10
#define minVol 1
#define maxVol 128
void setup(){
pinMode(piezoPin,OUTPUT);
pinMode(9,OUTPUT);
TCCR1A = (1 << COM1A1) | (1 << COM1B1 | 1 << WGM10);// sets timer control bits to PWM Phase and Frequency Correct mode
TCCR1B = 0x12; // sets timer control bits to Prescaler N = 8
analogWrite(piezoPin, 127); //something less than full volume
}
int length = 15; // the number of notes
char notes[] = "ccggaagffeeddc "; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };
int tempo = 450;
void playNote(char note, int duration) {
char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', ' ' };
int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 958, 30 };
int d = duration;
// play the tone corresponding to the note name
for (int i = 0; i < 9; i++) {
if (names[i] == note) {
OCR1A=tones[i];
//attack
for(int x = minVol; x < maxVol;x*=2){
analogWrite(piezoPin, note == ' '?minVol:x);
delay(10);
d-=10;
}
//decay
int x = maxVol;
while(d >= 2){
analogWrite(piezoPin, note == ' '?minVol:x);
x-=1;
if(x<minVol) x = minVol;
delay(5);
d-=5;
}
analogWrite(piezoPin, minVol);
delay(2);
}
}
}
void loop() {
for (int i = 0; i < length; i++) {
playNote(notes[i], beats[i] * tempo);
}
}