Karaoke is a Japanese word.that means sing for the music given.you can sing in night clubs in Japan.but in karaoke pubs in Srilanka little different.you also can sing but mostly  girls will come and try to hang with you,you can drink and dance with them.sex is prohibited in the club.but if you can atract the girl she will agree to meet you in out side the pub.how ever finely you will get a big bill.that means these places are very expensive. be careful.