I had my share of Asian horrors, not too many I must say but enough for an opinion to be formed. While they bring something new from your typical Hollywood scares they also kinda always circle around the same pattern, a female ghost, long hair, usually crawling in a scary way or walking on a ceiling, nonetheless you can say: you've seen one, you've seen them all. Well not really, this movie takes you outside the box a little, characters have solid builds, it shows the cruel reality of bands struggling to succeed and you get a inside look in the music industry.
Also, as many Asian Horrors accustomed us, this one also has a twist and quite impossible to figure it out, therefore if you're watching it alone or with friends, you'll get a blast trying to figure out who is behind all of it.
I guess there are more things to be said but I find it best to let you discover them for yourself, just have a little faith and patience, quite hard to be disappointed by it.