A man who did not try to leave the microphone at karaoke will be killed

There are people who are keen on singing by singing karaoke and not releasing the microphone, but there seem to be some people who have been killed because of just singing. Perhaps it seems a trivial reason, since songs appeal to feelings, it may be that they cause a violent emotion.

Details are as below.
Malaysian man killed for hogging karaoke microphone | World news | guardian.co.uk

An incident occurred at a coffee shop serving as a karaoke bar in the town of Sandakan on Borneo Island. Three men who were in the table next to each other angrily took out Mr. Abdul Sani Dori who was absorbed in the songs and did not release the microphone, and the discussion glowed hotly and developed into a fighter. In the end Mr. Abdul was said to have been killed.

Another thing is that in Thailand, the incident of getting tired of songs and shooting eight people happens, and it is increasing that killing in the midst of karaoke due to way of singing. In the Philippines, there seems to be a bar which removes the "My Way" of Frank Sinatra from the songs of karaoke in order to prevent the riot caused by tone deafness.