Piezo Music with Arduino

//Périodes de chaque note (*0.0000001)
#define tone_C 1911
#define tone_C1 1804
#define tone_D 1703
#define tone_Eb 1607
#define tone_E 1517
#define tone_F 1432
#define tone_F1 1352
#define tone_G 1276
#define tone_Ab 1204
#define tone_A 1136
#define tone_Bb 1073
#define tone_B 1012
#define tone_c 955
#define tone_c1 902
#define tone_d 851
#define tone_eb 803
#define tone_e 758
#define tone_f 716
#define tone_f1 676
#define tone_g 638
#define tone_ab 602
#define tone_a 568
#define tone_bb 536
#define tone_b 506

#define tone_p 0  //pause

const int PIEZO = 85;

long vel = 20000;

// mario
int mario_m[] = {tone_e, tone_e, tone_e, tone_c, tone_e, tone_g, tone_G, tone_c, tone_G, tone_E, tone_A, tone_B, tone_Bb, tone_A, tone_G, tone_e, tone_g, tone_a, tone_f, tone_g, tone_e, tone_c, tone_d, tone_B, tone_c};
int mario_r[] = {6, 12, 12, 6, 12, 24, 24, 18, 18, 18, 12, 12, 6, 12, 8, 8, 8, 12, 6, 12, 12, 6, 6, 6, 12};

// Looks like zelda
int peergynt_m[] = {tone_G, tone_E, tone_D, tone_C, tone_D, tone_E, tone_G, tone_E, tone_D, tone_C, tone_D, tone_E, tone_D, tone_E,tone_G, tone_E, tone_G, tone_A, tone_E, tone_A, tone_G, tone_E, tone_D, tone_C};
int peergynt_r[] = {8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 16};

// Some electric guitar...
int smoke_m[] = {tone_E, tone_G, tone_A, tone_E, tone_G, tone_Bb, tone_A, tone_E, tone_G, tone_A, tone_G, tone_E};
int smoke_r[] = {12, 12, 18, 12, 12, 6, 18, 12, 12, 18, 12, 24};

// Start like something similar to le reine au nez rouge...
int natal_m[] = {tone_G, tone_A, tone_G, tone_E, tone_G, tone_A, tone_G, tone_E, tone_c, tone_c, tone_A, tone_B, tone_B, tone_G, tone_A, tone_G, tone_A, tone_c, tone_B, tone_A, tone_G, tone_A, tone_G, tone_E};
int natal_r[] = {12, 4, 8, 16, 12, 4, 8, 16, 12, 4, 16, 12, 4, 16, 12, 4, 8, 8, 8, 8, 12, 4, 8, 16};

// Seems like some electric guitar solo...
int LTS_m[] = {tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_C, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_G, tone_Bb, tone_G, tone_F, tone_D, tone_F, tone_D, tone_G, tone_F, tone_D, tone_C, tone_Bb, tone_G, tone_Bb, tone_C, tone_C1, tone_C, tone_Bb, tone_F, tone_D, tone_Bb, tone_G, tone_F, tone_D, tone_C, tone_Bb, tone_D, tone_C, tone_Bb, tone_G} ;
int LTS_r[] = {4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4};

void setup()
{
    pinMode(PIEZO, OUTPUT);
    delay(2000);

    Serial.begin(115200);
}

void loop()
{
    const int LEN = (sizeof(smoke_r) + 1) / 4;
    Serial.println(LEN);
    for (int i=0; i < LEN; i++)
    {
        int tom = smoke_m[i];
        int tempo = smoke_r[i];

        long tvalue = tempo * vel;

        tocar(tom, tvalue);

        delayMicroseconds(1000); //pause between notes
    }
}

void tocar(int tom, long tempo_value)
{
     long tempo_gasto = 0;
     while (tempo_gasto < tempo_value && tempo_value < 640000) // enters an infinite loop when tempo_value is a big value
     {
        digitalWrite(PIEZO, HIGH);
        delayMicroseconds(tom / 2);

        digitalWrite(PIEZO, LOW);
        delayMicroseconds(tom/2);

        tempo_gasto += tom;
    }
}