Chord

A chord in music is a set of notes which are sounded together and which sound satisfactory together.
Usually, a chord is made up of certain notes of a scale or key, although there may be extra notes as well as these.
A chord is usually considered to be three or more notes, and the most obvious simple chord is a triad.
A chord may be formed by three or more different parts singing or playing different notes at the same time, or it may be formed by many fingers at once on a keyboard instrument.
Solo instruments such as the violin cannot in principle play a chord, but the effect can be produced by playing notes of a chord in rapid succession, so the listener almost hears a chord.
There are two main types of notation for chords:
- Figured base
- Jazz chord names, also used for popular music