Summer Vacation Project- Quartet XDifficult classic, boring classic, sleepy classic go away! Concert with an interesting explanation \’Classis is My Friend\’The best musical instrument - Voice Cho Yoon-beom\’s opera story \’Puccini\’More fun than "Gacon (Gag Concert)"! a famous opera composer Puccini\’ lifelong story~a new version of classic concert with a \’presentation show\’ form by the use of projector and screen breaking away from existing lecture styles. Leader Cho Yoon-beom\’s pleasant and clear explanation and Quartet X\’s performance to give a better understanding of classical music to students.