The
whole note or
semibreve has a
note head in the shape of a hollow oval—like a
half note (or
minim)—but with no
note stem (see Figure 1). Since it is equal to four quarter notes, it occupies the entire length of a
measure in
time. Other notes are multiples or fractions of the whole note. For example, a
double whole note (or
breve) lasts twice the duration of the whole note, a half note lasts one half the duration, and a
quarter note (or
crotchet) lasts one quarter the duration. A related symbol is the
whole rest (or
semibreve rest), which signifies a rest for the duration of a whole note. Whole rests are drawn as filled-in rectangles generally hanging under the second line from the top of a
musical staff, though they may occasionally be put under a different line (or
ledger line) in more complicated
polyphonic passages, or when two instruments or vocalists are written on one staff. When an entire
bar is devoid of notes, a whole (semibreve) rest placed at the
middle of the measure is used, regardless of the actual
time signature. Less commonly, the whole note may be used to denote a whole measure in music of free rhythm, such as
Anglican chant, irrespective of the time of the measure. == History ==