Roblox Music Script (Not a pro may not work.)

local s = Instance.new("Sound")

s.Name = "Sound"
s.SoundId = "You'll have to find the ID of the sound you want in the Catalog"
s.Volume = 1
s.Looped = true
s.archivable = false

s.Parent = game.Workspace

wait(0)

s:play()