ON (Lv.3+ Advanced+ )

BTS  

Lv.1 Beginner (note names included) | 초급 (음 이름 포함)

Lv. 2 Intermediate | 중급

Lv. 3- Advanced+ | 고급+

📖 K-pop Piano eBook

https://stuctu.gumroad.com/l/kpoppiano-full