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
중세 음악에서 네우마는 음의 높이를 나타내는 기호입니다.jungse eumakeseo neuma-neun eum-ui nopireul natanuneun giho-imnida.In medieval music, a neume is a symbol that indicates the pitch of a note.