Roblox Script Generated by ScripterAI

"create me a gui button and when clicked shows an input box and when you input a music id it will start playing music from your music id and add a hide button"

First, create a ScreenGui in the StarterGui and add a TextButton and a TextBox inside it. Name the TextButton "PlayButton" and the TextBox "InputBox". Then, add a LocalScript inside the ScreenGui with the following code:

```lua
local player = game.Players.LocalPlayer
local gui = player.PlayerGui:WaitForChild("ScreenGui")
local playButton = gui:WaitForChild("PlayButton")
local inputBox = gui:WaitForChild("InputBox")

local sound = Instance.new("Sound")
sound.Parent = workspace

playButton.MouseButton1Click:Connect(function()
    local musicId = tonumber(inputBox.Text)
    if musicId then
        sound.SoundId = "rbxassetid://" .. musicId
        sound:Play()
    end
end)
```

This script will play the music with the given ID when the button is clicked. To add a hide button, create another TextButton inside the ScreenGui, name it "HideButton", and add the following code to the same LocalScript:

```lua
local hideButton = gui:WaitForChild("HideButton")
local guiHidden = false

hideButton.MouseButton1Click:Connect(function()
    if guiHidden then
        guiHidden = false
        playButton.Visible = true
        inputBox.Visible = true
        hideButton.Text = "Hide"
    else
        guiHidden = true
        playButton.Visible = false
        inputBox.Visible = false
        hideButton.Text = "Show"
    end
end)
```

This code will toggle the visibility of the PlayButton and InputBox when the HideButton is clicked.