/*
 * SOUNDMUSIC1.c
 *
 * Created: 02.01.2014 9:51:31
 *  Author: Big-Boss
 */ 

#define F_CPU 8000000UL 
#include <avr/io.h>
#include <avr/interrupt.h> //библиотека нужна для работы прерываний
#include "lib SOUNDMUS 1.h"
#include <Util/delay.h>

uint8_t i=0;
uint8_t melodia[30]={13, 22, 22, 20, 22, 18, 13, 13, 13, 22, 22, 23, 20, 25, 25, 25, 25, 15, 15, 23, 23, 22, 20, 18, 18, 22, 22, 20, 22, 18 };// melodia
uint8_t softTimer=0; //переменная для программного счетчика

ISR(TIMER0_OVF_vect)  
{
    if (softTimer==10 ) 
    {
        softTimer=0;
        
        if (i<30)
        {
            nota(melodia[i]);
            i++;
        }
        else {i=0;}
    }
    else {softTimer++;}
}

int main(void)
{
    DDRB=0b00000010; //
    TCCR1A=0B01000000; 
    TCCR1B=0B00001001; 
    
    TCCR0=0b00000101; 
    TIMSK=0b00000001; 
    sei(); 
    
    while(1)
    {
        DDRD=0b11111111;
        DDRC=0b00000011;
        
        //TODO:: Please write your application code
    
    for (uint16_t j=1; j<129; j=j*2)
    {PORTD=j;
        _delay_ms(250);
    }
    PORTC=0b00000001;
    _delay_ms(250);
    PORTC=0b00000010;
    _delay_ms(250);
    PORTC=0;
    for (uint16_t j=128; j>0; j=j/2)
    {PORTD=j;
        _delay_ms(250);
    
    }
     PORTC=0b00000010;
     _delay_ms(250);
     PORTC=0b00000001;
     _delay_ms(250);
     PORTC=0;
}
}
И вот такая библиотека была высчитана через частоты ноток
#include <avr/io.h> //подключение библиотеки ввода-вывода


void nota(uint8_t x) //Пианино на 12 ноток
{
    switch(x)
    {
        case 0: {OCR1A=10000;};break; // 
        
        
        
        case 1: {OCR1A=30576;}; break; // 130.82 hz   "do" mal okt
        case 2: {OCR1A=28862;}; break; // 138.59 hz   "do diez" mal okt
        case 3: {OCR1A=27058;}; break; // 147.83 hz   "re" mal okt
        case 4: {OCR1A=25714;}; break; // 155.56 hz   "re dies" mal okt
        case 5: {OCR1A=24270;}; break; // 164.81 hz   "mi" mal okt
        case 6: {OCR1A=22907;}; break; // 174.62 hz   "fa" mal okt
        case 7: {OCR1A=21622;}; break; // 185.00 hz   "fa diez" mal okt
        case 8: {OCR1A=20408;}; break; // 196.00 hz   "sol" mal okt
        case 9: {OCR1A=19324;}; break; // 207.00 hz   "sol diez" mal okt
        case 10: {OCR1A=18182;}; break; // 220.00 hz   "lya" mal okt
        case 11: {OCR1A=17161;}; break; // 233.08 hz   "si bemol" mal okt
        case 12: {OCR1A=16197;}; break; // 246,96 hz   "si" mal okt
        case 13: {OCR1A=15289;};break; // 261,63 hz   "do" 1 okt
        case 14: {OCR1A=14431;};break; // 277,18 hz   "do diez" 1 okt
        case 15: {OCR1A=13621;};break; // 293,66 hz   "re" 1 okt
        case 16: {OCR1A=12856;};break;  // 311,13 hz   "re diez" 1 okt
        case 17: {OCR1A=12135;};break;  // 329,63 hz   "mi" 1 okt
        case 18: {OCR1A=11454;};break;  // 349,23 hz   "fa" 1 okt
        case 19: {OCR1A=10811;};break;  // 369,99 hz   "fa diez" 1 okt
        case 20: {OCR1A=10204;};break;  // 392,00 hz   "sol" 1 okt
        case 21: {OCR1A=9632;};break;   // 415,30 hz   "soi-diez" 1 okt
        case 22: {OCR1A=9091;};break;  // 440,00 hz   "lya" 1 okt
        case 23: {OCR1A=8581;};break;  // 466,16 hz   "si-bemol" 1 okt
        case 24: {OCR1A=8099;};break;  // 493,88 hz   "si" 1 okt
        case 25: {OCR1A=7645;}; break; // 523.25 hz   "do" 2 okt
        case 26: {OCR1A=7216;}; break; // 554.36 hz   "do-diez" 2 okt
        case 27: {OCR1A=6811;}; break; // 587.32 hz   "re" 2 okt
        case 28: {OCR1A=6428;}; break; // 622.26 hz   "re-diez" 2 okt
        case 29: {OCR1A=6067;}; break; // 659.26 hz   "mi" 2 okt
        case 30: {OCR1A=5727;}; break; // 698.46 hz   "fa" 2 okt
        case 31: {OCR1A=5406;}; break; // 739.98 hz   "fa-diez" 2 okt
        case 32: {OCR1A=5102;}; break; // 784.00 hz   "sol" 2 okt
        case 33: {OCR1A=4816;}; break; // 830.60 hz   "sol-diez" 2 okt
        case 34: {OCR1A=4545;}; break; // 880.00 hz   "lya" 2 okt
        case 35: {OCR1A=4290;}; break; // 932.32 hz   "si-bemol" 2 okt
        case 36: {OCR1A=4050;}; break; // 987.75 hz   "si" 2 okt
        case 37: {OCR1A=3822;}; break; // 1046.50 hz   "do" 3 okt
        //case 38: {OCR1A=10000}; break; // 493,88 hz   "do-diez" 3 okt
        //case 39: {OCR1A=10000}; break; // 493,88 hz   "re" 3 okt
        //case 40: {OCR1A=10000}; break; // 493,88 hz   "re-diez" 3 okt
        //case 41: {OCR1A=10000}; break; // 493,88 hz   "mi" 3 okt
        //case 42: {OCR1A=10000}; break; // 493,88 hz   "fa" 3 okt
        //case 43: {OCR1A=10000}; break; // 493,88 hz   "fa-diez" 3 okt
        //case 44: {OCR1A=10000}; break; // 493,88 hz   "sol" 3 okt
        //case 45: {OCR1A=10000}; break; // 493,88 hz   "sol-diez" 3 okt
        //case 46: {OCR1A=10000}; break; // 493,88 hz   "lya" 3 okt
        //case 47: {OCR1A=10000}; break; // 493,88 hz   "si-bemol" 3 okt
        //case 48: {OCR1A=10000}; break; // 493,88 hz   "si" 3 okt
    }
}