There are:
- Whole notes - semibreve - 4 beats
- Half notes - minim - 2 beats
- Quarter notes - crotchet - 1 beat
- Eighth notes - quaver - half a beat
- Sixteenth notes - semiquaver - a quarter beat
- A demisemiquaver is half of a semiquaver, and a hemidemisemiquaver is half of a demisemiquaver. These terms really do exist.
- Each of the above notes may also be expanded by the addition of a dot, which would extend its length by half its value. For example, a dotted crotchet is one and a half beats. A dotted minim is worth three beats.
In addition, there is the breve, which is rarely used.
Regarding pitch, there are eight notes in any goven octave, and a total of twelve notes in music: C, C#/Db, D, D#/Eb, E, F, F#/Gb, G, G#/Ab, A, A#/Bb, and B.