Trying to find certain objects in the workspace(sound) by using its classname?

Im trying to create a script to look for any objects with the classname Sound in the workspace but idk how to do it i tried using findfirstchild but it only finds using the name, not the classname?

like i can use this but it only finds it using the name of it not classname

local found = workspace:FindFirstChild("Sound",true) if found then found.PlaybackSpeed = 0.5 end

There's a function called 'FindFirstChildOfClass'.

local sound = workspace:FindFirstChildOfClass('Sound')

if sound then sound.PlaybackSpeed = 0.5 end

There is a property of all instances called GetDescendants. You can use this like so,

for i,v in pairs(workspace:GetDescendants()) do
	if v.ClassName == "Sound" then
		--Do Stuff
	end
end