听说以前人们是这样听音乐的，完全看不懂呢！
May 22, 2021 May 22, 2021 https://d2t.bkseeker.com/%e5%90%ac%e8%af%b4%e4%bb%a5%e5%89%8d%e4%ba%ba%e4%bb%ac%e6%98%af%e8%bf%99%e6%a0%b7%e5%90%ac%e9%9f%b3%e4%b9%90%e7%9a%84%ef%bc%8c%e5%ae%8c%e5%85%a8%e7%9c%8b%e4%b8%8d%e6%87%82%e5%91%a2%ef%bc%81-2
