https://tsuyoshi-koizumi.com/notice/%e9%9f%b3%e6%a5%bd%e6%95%99%e5%ae%a4%e3%80%8caube-music-academy%e3%80%8d%e4%bd%93%e9%a8%93%e3%83%ac%e3%83%83%e3%82%b9%e3%83%b3%e5%8f%97%e4%bb%98%e4%b8%ad/2026-08-01T10:00:00+09:00