Chord
Chord (chord) from the Greek χορδή, intended to refer to the string line. In music theory, it refers to the combination of two or more different pitch sound. In European classical music and the music style influenced by it, more often refers to three or more pitch combinations, and the combination of two pitch is described by interval. The composition of the chord, can be played separately, can also play at the same time. Separate playing, we call the decomposition chord [or scattered chord]. Chord has three times the stack and non-three overlapping, in the Western traditional harmony in the chords, are in accordance with the principle of three overlapping. There are many ways to mark chords, and baroque music is often marked with chords in digital bass. Classical music often chords chords with Roman numerals, jazz and pop music are often marked with chords in alphabetical alphabet. ...