A chord, in music, is any harmonic set of three or more notes that is heard as if sounding simultaneously. Chords have different Forms, such as Triad, Seventh, Extended, Added/Omitted, Specific or General. Chords have different Functions, such as Diatonic, Altered or Other. A Chord Interval is how the members of the chord are counted, from 1 (the "root") to e.g. 3 (the "third") or 5 (the "fifth") It's possible to export a list of all known chord parsing rules. Chords are expressed in readable strings, e.g. CMb5b7 or Cm679-5 Chords have different Techniques, such as Block, Chordioid, Guitar, Open, Power or Slash.