Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
음악에서 온음은 감정을 전달하는 중요한 요소입니다.eumakeseo oneumeun gamjeongeul jeondalhaneun jungyohan yosoimnida.In music, tone is an important element that conveys emotions.