How to make sounds play locally?

like in Pilgrim Islands Reborn, the islands in the game has a different sound

local player = script.Parent.Parent --Make sure to put this in 'StarterGui'

local Sound = Instance.new("Sound", player)
Sound.Name = "LocalMusic"
Sound.SoundId = "http://www.roblox.com/asset/?id="..ID.Text --Change this to whatever ID you want :P
wait(0.1)
Sound:play()
end
end

Just place this into whatever you are trying to add, then continue on to make appropriate functions.