Can anyone please help me with this end error including elses?

Ok, essentially I have a LocalScript inside of a Tool. Everything about my tool works, but I have this pestering error that has been occuring. The error that shows up is as follows, "22:53:00.838 - Players.PLAYERNAMEREDACTED.Backpack.a.LocalScript:29: 'end' expected (to close 'function' at line 6) near 'else'".

Oh, and to explain the script. I have a script where when you equip a tool and press a certain key, there is a blur and music starts playing. When the blur size gets to a certain value, there is a for loop which gives the effect of text appearing. I only need to work on syntax errors. Also, if any of my vocabulary is wrong, please bear with it as I'm coming back to scripting in Roblox after a while, so I could be a little rough on it.

This is the code I have, as is listed below. I really need help with fixing up the ends, and I believe every if, function, and else has an end statement. All help is appreciated!

local music = script.Parent:WaitForChild("Piano")
visibleValue = workspace.HeyKids.Value
local blur = game.Lighting:WaitForChild("BlurEffect")
local player = game.Players.LocalPlayer
local tool = script.Parent
tool.Equipped:Connect(function(mouse)
	
		mouse.KeyDown:connect(function(key)
			if key:byte() == 96 then
				music.Playing = true
				music.Looped = true
				for m = 0,24.1,.1 do
					wait(.1)
					blur.Size = m
					if blur.Size == 24 then
						visibleValue = true
					end
				end
				if visibleValue == true then
					for i = 1,0,-.05 do
						player.PlayerGui.ScreenGui.Frame.TextLabel.TextTransparency = i
						wait(.01)
					end
				else
					player.PlayerGui.ScreenGui.Frame.TextLabel.TextTranparency = 1
				end
			end
		end)
				else if key:byte() == 127 then
					music.Playing = true
					music.Looped = true
					for n = 0,12.05,.05 do
						wait(.05)
						blur.Size = n
						if blur.Size == 12 then
							coolValue = true
						end
						if coolValue == true then
							player.PlayerGui.ScreenGui.Frame.TextLabel.Text = ("i have the high ground")
							for b = 1,0,-.05 do
								player.PlayerGui.ScreenGui.Frame.TextLabel.TextTransparency = b
								wait (.01)
							end
						else 
							player.PlayerGui.ScreenGui.Frame.TextLabel.TextTransparency = 1
						end
					end
				end
				end
	end)	
end)

tool.Unequipped:Connect(function()
	player.PlayerGui.ScreenGui.Enabled = false
	music.Playing = false
	blur.Size = 0
end)

If anyone can help, please list what is needed so I can get to work.