Using the Disaster Kit V2, how can I make maps have different music?

So I'm playing around with the Disaster Kit V2 and I made a map rotation system, and I want to make every map have a different background music, but when the map changes, the song keeps playing. How can I make it so specific music only plays on it's specific map?

Here's the script for the map changing if it helps:

function regenStructures()
	workspace.Structures:ClearAllChildren()
	local maps = game.ServerStorage.Clones.Maps:GetChildren()
	local mapCopy = maps[math.random(1, #maps)]:Clone()
	mapCopy.Parent = workspace.Structures
	mapCopy:MakeJoints()
end

Here's my concept, why not make a folder where you store your audios?

So if you have audio sound stored in your folder, it should be like this. (make sure sounds are named)

local sound = Instance.new("Sound", game.Workspace)
local bm = --location of the folder
local st = bm.--(sound in folder you want to play)
local en = bm.--(sound you want to stop)

function regenStructures()
	workspace.Structures:ClearAllChildren()
	local maps = game.ServerStorage.Clones.Maps:GetChildren()
	local mapCopy = maps[math.random(1, #maps)]:Clone()
	mapCopy.Parent = workspace.Structures
	mapCopy:MakeJoints()
wait(1)
	en.--(audio in the folder currently playing).Sound:Stop()
	sound.Looped = true
	st.--(audio that you want to play next).Sound:Play()
end

If you have any errors or questions about this, feel free to ask, and I might edit this again.