The "karaoke singing accelerated class" begun by the Pi Shih Company in the Chungshan district of Taipei is the classic example of the trend of popularity of "karaoke supplementary school."
位於台北市中山區的陛士公司所開設的「卡啦 OK 演唱速成班」，就是時下所流行「卡啦 OK 補習班」的典型。