Clivis Neume (Musical Notation)

The image shows a fragment of square musical notation on a staff of four horizontal black lines. A single black, square-shaped neume is placed on the upper lines; the first note is positioned on the second line from the top, and the second note, linked by a vertical line, is positioned on the third line from the top. The background is white and the notation is stark black, characteristic of Gregorian chant manuscript fragments.

This neume represents the transition from oral chant traditions to the codified Western musical notation system developed in the high Middle Ages. It is essential for the transmission of liturgical plainchant as preserved in monastic musicology.