While true do script isn't doing anything at all, when it's supposed to?

I have a script to set the time that a song has been playing when another script sets a value. It utilizes a while true loop until the song finishes. What's wrong with it?

local rs = game.ReplicatedStorage
rs.Music.SongName.Changed:Connect(function()
	local currenttime = 0
	local totaltime = rs.Music.Seconds.Value
	while true do
		wait(1)
		if currenttime < totaltime then
			currenttime = currenttime + 1
			if game.ReplicatedStorage.Music.CurrentTime.Seconds.Value > 60 then
				game.ReplicatedStorage.Music.CurrentTime.Seconds.Value = game.ReplicatedStorage.Music.CurrentTime.Seconds.Value + 1
			elseif game.ReplicatedStorage.Music.CurrentTime.Seconds.Value == 60 then
				game.ReplicatedStorage.Music.CurrentTime.Minutes.Value = game.ReplicatedStorage.Music.CurrentTime.Minutes.Value + 1
				game.ReplicatedStorage.Music.CurrentTime.Seconds.Value = 0
			end
		end
	end
end)