I'm definitely not an expert. But I got
Into dancing after signing up at a dance academy! I went to classes once every week for 2hrs. But to become a KPOP idol you may need to train much harder. If it's your ultimate dream then you should enroll in professional dance and singing classes and practice every other day at home. Even if it's 1hr per day. For song choices you should try and concentrate on learning those that are from the company you want to get in, but try a variety! That's about all I know. Good luck! Xx
