delay requires 2 arguments?

Hi, my script randomly stopped working. It's a sound looper that seamlessly plays audio.

Error here is delay requires 2 arguments @ line 24

any ideas what's going on here?

--getLength
for i,v in pairs (script.Parent:GetChildren()) do
	if v:isA("Sound") then
		soundObj = v
		print("got sound ... " .. soundObj.Name)
	end
end

soundLength = soundObj.TimeLength
print("length = " .. soundLength)

function countDown(sound)
	sound:remove()
end

wait() 

while true do
	local newSound = soundObj:clone()
	newSound.Parent = script.Parent
	newSound:play()
	print("played new sound .. " ..newSound.Name)
	print("length = " .. soundLength)
	delay(soundLength, countDown(newSound)) -- line in question
	print("delay fired")
	wait(soundLength-1)
end