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)