The following is a list of mistakes that foreigners often make when they do karaoke in Japan, and how to avoid them.
Simply select a song on the touchscreen and you’ll “register” it into a queue on the karaoke machine.
For whatever reason, it’s terrible karaoke etiquette to enter a string of songs of your own choosing.
Likewise, if you’re with foreigner friends whose Japanese isn’t that good yet, they’re probably going to feel inadequate and bored if you insist on entering nothing but Japanese songs.
Karaoke in Japan isn’t about showing off how good a singer you are, it’s about having fun with your friends.