555 of course they come for Thai singers they are quite popular in Japan, especially luktung and morlam singers. Karaoke singers are just amateurs not professionals. We knew a Japanese company director with the firms car and driver a few years ago, he would pick us up and take us to concerts. One time to korat and back from Bkk the same evening or Pattaya and back just to see one singer, Kanchanaburi, all over the place. He would drop us off and carry on to try and catch the last of another concert, dedicated lot.
Not just Japanese, we took a guy who had flown from China a while back just to see Luktarn sing at a shopping centre, the type of singer the Japanese like as well, she's from CM