using System;
using System.Collections.Generic;
using System.Text;

namespace TechnoGen
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Title = "Techno music generator.";
            int i;

            while (true)
            {
                i = R;
            }
        }

        static char R
        {
            get
            {
                int t = r.Next(10);
                char c = ';';
                if (t <= 2)
                    c = (char)('0' + r.Next(r.Next(255)));
                else if (t <= 4)
                    c = (char)('a' + r.Next(r.Next(255)));
                else if (t <= 6)
                    c = (char)('A' + r.Next(r.Next(255)));
                else
                    c = (char)(r.Next(r.Next(224), 255));

                int freq = (c * r.Next(20, 100));
                int dur = (r.Next(10, 500));

                if (freq < 37) freq = 37;
                if (freq > 32767) freq = 32767;

                Console.Beep(freq, dur);
                return c;
            }
        }

        static Random r = new Random();
    }
}