How do i Fix This is Background Music script?

This script turns off the music when it dies, but the music doesn't continue on respawn please tell me how to fix this

local plr = game.Players.LocalPlayer

local bgm = game.Lighting:WaitForChild("bgm")

local m

local head = {}

plr.CharacterAdded:Connect(function(chr)
	m = Instance.new("Sound", chr)
	head[1] = chr:WaitForChild("Head")
	while plr.Character do
		wait(.4)
		for i , v in pairs(bgm:GetChildren())do
			local region = Region3.new(v.Position - (v.Size/2), v.Position + (v.Size/2))
			local found = game.Workspace:FindPartsInRegion3WithWhiteList(region, head)
			if found[1] then
				local s = v:FindFirstChildOfClass("Sound")
				if s and s.SoundId ~= m.SoundId then
					m:Stop()
					m.SoundId = s.SoundId
					m:Play()
				end
				break
			elseif i == #bgm:GetChildren() and m.IsPlaying then
				local vol = m.Volume
				for i=4, 0, -1 do
					m.Volume = vol*(i/5)
					wait(.5)
				end
				m:Stop()
				m.SoundId = ""
				m.Volume = vol
			end
		end
	end
end)