Pentatonic Music Box on C for Linux & PC-Speaker (Hang Drum)

// This is C source for small musical pentatonic toy-program for Linux that I wrote.
// :: :: DESCRIPTION ::
// This program has C major, G major, Eb major and E minor pentatonic scales.
// You can play them right from keyboard (12345, QWERT, ASDFG, ZXCVB).
// Save this text as pentatonic.c file, navigate with terminal and...
// ...compile with: gcc -o pentatonic pentatonic.c; then run with ./pentatonic
// Tested on Ubuntu 13.04 Alpha with gcc/g++ (Ubuntu/Linaro 4.7.2-19ubuntu1)
// It has several problems to fix but anyway it works.
// :: :: DEPENDENCIES :: Not really but a sort of...
// You might need to attach the "pcspkr" module (sudo modprobe pcspkr)
// And maybe also to grant 777 permissions to /dev/console (sudo chmod 777 /dev/console)
// Check if PC Speaker works correctly by "beep" program:
// sudo apt-get install beep
// beep -f 100 -l 1000
// :: :: PROBLEMS :: (I'll be really glad if someone can help me fix them) :: ::
// Problem 1: too large code for such a small program
// Solution 1: improve code, make it smaller and smarter
// Problem 2: program don't want to play the tunes until exited, so I have to exit after each key-press and re-run the program again with the following bash script:
// Solution 2: execute in bash: while true; do ./pentatonic; done
// Authored 23.01.2013 by Security XIII [at gmail dot com]
// P. S. Sorry, I have not much experience in C

#include <stdio.h> // I am not sure maybe we don't need some of the libs,
#include <stdlib.h> // But I'd better leave them here for now.
#include <string.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#define ESC 27
int array1[]={262,294,330,392,440}; // C major pentatonic scale
int array2[]={392,440,494,587,659}; // G major pentatonic scale
int array3[]={277,349,392,466,523}; // Eb major pentatonic scale
int array4[]={277,392,440,494,587}; // E minor pentatonic scale
int a1 = 50; // This is note value, the larger it is, the longer note sounds.
int key;

int getkey() { // Probably somewhere here starts the code that prevents program from
    int character;  // sounding correctly
    struct termios orig_term_attr;
    struct termios new_term_attr;
    tcgetattr(fileno(stdin), &orig_term_attr);
    memcpy(&new_term_attr, &orig_term_attr, sizeof(struct termios));
    new_term_attr.c_lflag &= ~(ECHO|ICANON);
    new_term_attr.c_cc[VTIME] = 0;
    new_term_attr.c_cc[VMIN] = 0;
    tcsetattr(fileno(stdin), TCSANOW, &new_term_attr);
    character = fgetc(stdin);
    tcsetattr(fileno(stdin), TCSANOW, &orig_term_attr);
    return character;
}

void beep (int frequency, int duration) // this code seems to be small enough and is okay
{
  FILE *tty;
  if ( NULL == (tty = fopen ("/dev/console", "w")) ) {fprintf (stderr, "Cannot write to /dev/console!\n" ); exit (1); }
  fprintf(tty, "%c[10;%d]%c[11;%d]\a", ESC, frequency, ESC, duration);
}

int main()
{
    while (1) {
        key = getkey();

        // Here all the magic starts.
        // Note: I have to use break condition because otherwise program just
        // prints the buttons that I press but there are no sound until you
        // exit it with ESC or Ctrl+C. So I leave break here... Have to do smth.
        // If I replace "break;" with "execl("pentatonic",NULL,NULL);" (self re-run) it
        // also doesen't work... >,,<

        if (key == 0x20) {printf("Key space pressed. Just test. Feel likeaboss?\n");}
        if (key == 0x1B) {printf("Exit key (ESC) pressed, BB!\n");exit (1);}

    if (key == 0x31) {printf("Key 1 Tone C Freq 262\n");beep(array1[0],a1);break;}
    if (key == 0x32) {printf("Key 2 Tone D Freq 294\n");beep(array1[1],a1);break;}
    if (key == 0x33) {printf("Key 3 Tone E Freq 330\n");beep(array1[2],a1);break;}
    if (key == 0x34) {printf("Key 4 Tone G Freq 392\n");beep(array1[3],a1);break;}
    if (key == 0x35) {printf("Key 5 Tone A Freq 440\n");beep(array1[4],a1);break;}

    if (key == 0x71) {printf("Key Q Tone G Freq 392\n");beep(array2[0],a1);break;}
    if (key == 0x77) {printf("Key W Tone A Freq 440\n");beep(array2[1],a1);break;}
    if (key == 0x65) {printf("Key E Tone B Freq 494\n");beep(array2[2],a1);break;}
    if (key == 0x72) {printf("Key R Tone D Freq 587\n");beep(array2[3],a1);break;}
    if (key == 0x74) {printf("Key T Tone E Freq 659\n");beep(array2[4],a1);break;}

    if (key == 0x61) {printf("Key A Tone Eb Freq 277\n");beep(array3[0],a1);break;}
    if (key == 0x73) {printf("Key S Tone F Freq 349\n");beep(array3[1],a1);break;}
    if (key == 0x64) {printf("Key D Tone G Freq 392\n");beep(array3[2],a1);break;}
    if (key == 0x66) {printf("Key F Tone Bb Freq 466\n");beep(array3[3],a1);break;}
    if (key == 0x67) {printf("Key G Tone C Freq 523\n");beep(array3[4],a1);break;}

    if (key == 0x7a) {printf("Key Z Tone Eb Freq 277\n");beep(array4[0],a1);break;}
    if (key == 0x78) {printf("Key X Tone G Freq 392\n");beep(array4[1],a1);break;}
    if (key == 0x63) {printf("Key C Tone A Freq 440\n");beep(array4[2],a1);break;}
    if (key == 0x76) {printf("Key V Tone B Freq 494\n");beep(array4[3],a1);break;}
    if (key == 0x62) {printf("Key B Tone D Freq 587\n");beep(array4[4],a1);break;}
    }
return 0;
}