Organum is musical composition
consisted
of two melodic lines moving simultaneously note against note , one of which is
an existing monophonic melody (melody or “tune”, typically sung by single
singer or played by single instrumental player). Organum earliest definition
and teachings are found in “Musica enchiriadis”, “Scolica” and the “Bamberg
Dialogues”. The best known composers of organum are Léonin and Pérotin.
