Why does this script that morphs the game not do anything?

I'm trying to make a joke script, but the countdown won't start. Also, the music won't play.

for i=1,5,-1 do
message = Instance.new("Message")
message.Parent = game.Workspace
message.Text = "This land will belong to serbia in "..i.." seconds."
wait(1)
end

function serbia()
accordian = Instance.new("Sound")
accordian.Parent = game.Workspace
accordian.SoundId = "https://www.roblox.com/library/544920674/Serbian-Army-Music"
accordian.Volume = 1
accordian:Play()
end
serbia()
print("good")

Help please!