After work, plenty of Thai people go for dinner with their colleagues and sing karaoke before going home. Many smaller bars/restaurants have a karaoke machine and unfortunately most people are not too shy to use it. Food, drinks and songs are cheap. The bars that I know have no name, but this type of bar is spread all over the country. Open your ears and you will find one. Note: Don't confuse this type of bar with a hostess bar, where one can sing karaoke too (among other things).