Quarter Note

Overview

A quarter note, known in British terminology as a crotchet, represents a note value that typically receives one beat in the common time signature of 4/4. It is one of the most fundamental rhythmic units in Western music, serving as the building block for longer and shorter note values alike. In modern notation the quarter note is displayed with an open (hollow) notehead attached to a vertical stem; the stem may point upward or downward depending on the note’s vertical position on the staff.

How It’s Notated

The symbol consists of a hollow oval notehead placed on a line or space of the staff, with a straight stem attached to the right side of the notehead for notes on the left side of the staff and to the left side for notes on the right side. When the note appears in a group of shorter values (e.g., eighth notes), the stems are beamed together; a solitary quarter note has a single, un‑beamed stem. In the rare case of a quarter rest, the symbol is a squiggly vertical line that occupies the same rhythmic space but does not have a notehead.

How It’s Performed

When a performer sees a quarter note, they sustain the pitch for the duration of one beat as defined by the prevailing tempo and time signature. In a tempo of 120 bpm with a 4/4 meter, a quarter note lasts exactly half a second. The performer does not add any extra articulation unless indicated by additional markings (e.g., staccato dots or tenuto lines). The note’s rhythmic placement is counted as “one, two, three, four” in simple meter, providing the pulse that underpins the measure.

Origin

The quarter note’s visual form derives from medieval mensural notation, where the “brevis” (short) evolved into the modern “crotchet” during the 16th century. The open notehead with a stem was standardized in the Baroque period as music printing became more uniform. The term “crotchet” originates from the French word “crochet,” meaning “hook,” referring to the hook‑like shape of the early stem.

Where You’ll See It

Quarter notes appear in virtually every genre that uses Western staff notation, from classical symphonies to pop songs, jazz charts, and folk transcriptions. They are especially prevalent in the Common Practice Period (Baroque, Classical, and Romantic eras) where simple meter dominates. In contemporary score types such as lead sheets, the quarter note remains the default rhythmic unit for melodic lines.

Common Misconceptions / Confused Symbols

Because many rhythmic symbols look similar, learners often mix them up. Below are frequent confusions involving the quarter note.

• Misconception: A quarter note is the same as a half note because both have stems.
  Correction: A half note has an open notehead with a stem but lasts two beats, twice the duration of a quarter note.
• Misconception: The solid black notehead indicates a quarter note.
  Correction: Quarter notes have an open (hollow) notehead; solid noteheads belong to eighth notes, sixteenth notes, and smaller values.
• Misconception: A quarter rest looks like a quarter note without a pitch.
  Correction: A quarter rest is a distinct squiggly symbol, not a notehead with a stem.
• Misconception: All stems point upward.
  Correction: Stem direction follows standard rules: stems point up when the notehead is below the middle line of the staff and down when above.
• Misconception: Adding a dot to a quarter note makes it a half note.
  Correction: A dotted quarter note adds half of its original value, resulting in a duration of 1.5 beats, not two beats.