Having issues with Region3 in roblox lua

Question

I have been trying to work on a Region3 script were when you are in it, it plays a song. But I've come across 2 issues, 1 being it thinks the player is always in it when you the player isn't. And the second being the script runs so fast that it keeps repeating before anything can happen

local RegionPart = game.Workspace.RegionArea
local pos1 = RegionPart.Position - (RegionPart.Size / 2)
local pos2 = RegionPart.Position + (RegionPart.Size / 2)
local Region = Region3.new(pos1, pos2) 

while true do 
    wait()
    local burhj = workspace:FindPartsInRegion3(Region, nil, 1000)
        local song = game.Workspace.bb
        song:Play()
        print("THE SCRIPT WORKS!")
    end