I'm trying to make a serverscript play music to the client?

Basically, I'm making a round based PVP game, and i'm trying to make it so when the game starts, the music changes , and in the server script, (where it plays the music) it will fire a remote event to the client, but im getting an error: FireClient() argument must be a player object. Help would be appreciated.

Here is the 1st script: (server script)

local player = game.Players.LocalPlayer


--I skipped to the part where it plays the music

game.ReplicatedStorage.startMusic:FireClient()

2nd script: (Local script)

game.ReplicatedStorage.startMusic.OnClientEvent:Connect(function()
	game.Workspace.Music.Lobby:Stop()
	game.Workspace.Music.Game1:Play()
end