cannot set button properties from a different class.

Question

What am I doing wrong.  Trying to make a button disappear from my player class hide method.  code to follow:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication4

{

    public partial class Form1 : Form

    {

        

        public Form1()

        {

            InitializeComponent();                        

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            Player p1 = new Player();

            p1.Hide();           

        }

        private void button1_Click(object sender, EventArgs e)

        {

        }

        public Boolean button1Visible

        {

            get { return this.button1.Visible; }

            set { this.button1.Visible = value; }

        }      

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication4

{

    class Player

    {        

        public void Hide()

        {

            Form1 frm1 = new Form1();

            frm1.button1Visible = true;

         }       

    }

}