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 반음기호는 음의 높이를 조정하는 데 사용됩니다.eum-ageseo ban-eum-giho-neun eum-ui nop-i-reul jojeonghaneun de sayongdoemnida.In music, the chromatic sign is used to adjust the pitch of a note.