One of the things my daughter enjoyed the most on our trip was Karaoke. It was so fun we did it twice.
You rent your own room for a few dollars per person per hour, plus you have to buy a drink.
We visited Karaoke-Kan in Shinjuku, which is a chain: http://karaokekan.jp/.
One time, our room was on the 10th floor. The whole building ( floors 2 and up ) was karaoke rooms.
You can barely hear other people singing around you.
First you have to warm up.
Then you get the hang of it.
This is professional level:
