https://blog.wongcw.com/2020/10/12/spotify%e9%98%bb%e6%ad%a2songshift%e5%b0%87%e5%85%b6%e6%ad%8c%e5%96%ae%e8%bd%89%e7%a7%bb%e5%88%b0apple-music%e7%ad%89%e5%85%b6%e4%bb%96%e6%9c%8d%e5%8b%99%e4%b8%8a/