tcc -run ctris.c | aplay -r8000

ctris.c

static const char m[] = {
        24,24,18,19,
        21,21,19,18,
        16,16,16,19,
        24,24,21,19,

        18,18,18,19,
        21,21,24,24,
        19,19,16,16,
        0,0,0,0,

        21,21,21,25,
        32,32,28,25,
        24,24,24,19,
        24,24,21,19,

        18,18,18,19,
        21,21,24,24,
        19,19,16,16,
        0,0,0,0,
};
main(t){for(;;t++)putchar(t*m[t>>11&63]&128);}