NEUME

in musical notation, a sign for one or more successive musical pitches, predecessor of modern musical notes. Neumes have been used in Christian (e.g., Gregorian, Byzantine) liturgical chant as well as in medieval polyphony (music in several voices, or parts) and some secular monophony (music consisting of a single melodic line). Early neumes developed from Greek textual accents that were gradually modified into shapes showing pitch direction and vocal ornament. These staffless, or chironomic, neumes facilitated recall of a memorized melody in accordance with the semi-oral musical practices of the time. Before long, neumes were heighted so as to suggest specific melodic lines. A musical staff of four lines evolved about the year 1000. Neumes placed on the staff showed exact pitch, allowing a singer to read an unfamiliar melody. By about 1200, neumes had assumed the characteristic square shapes still used in the modern notation of Gregorian chant. Whether and how neumes indicated rhythm remains a subject of controversy. Musical notes with time values evolved from neumes in the last half of the 13th century. A distinct system of neumes is employed for the notation of the Buddhist chant of India, Tibet, China, and Japan. It is perhaps a borrowing from the Nestorians of ancient Central Asia.