It contains information on clefs, notes, and scales that can be used to prepare for the entrance exams for the instrumental and vocal music departments of the Korea National University of Arts' Conservatory of Music.
You can sufficiently practice and prepare for the music theory exam with core theories and practice problems that can help you understand the principles, basic mock exams that allow you to build your skills by practicing the learned theories in various ways, and actual mock exams in the same style as the actual entrance exam.
The difficult parts of practice problems and mock exams can be easily understood through detailed solutions, and tips are provided to help you perform well on the exam without making mistakes.