Torculus Neume

The image features a black, ink-drawn torculus symbol placed between two horizontal parallel lines, representing a musical staff. The neume consists of a lower note, a higher note, and a return to the lower note, rendered as a compact, vertical cluster. The style is that of a traditional square notation manuscript.

The torculus is a fundamental neume in Gregorian chant notation, representing a melodic progression of three notes (low-high-low). It serves as a primary unit for the transmission of liturgical plainchant in the medieval Western tradition.