MusicChord

MusicChord[name]
MusicChord[name, duration]
MusicChord[{pitch1, pitch2, ...}, duration]
MusicChord[properties]

represents simultaneous musical pitches. A chord can be specified by name or by an explicit pitch list:

MusicChord["C Major", 1/2]

MusicChord[{"C4", "E4", "G4"}, 1/2]

Useful properties include "PitchList", "Root", "Name", "Duration", "Inversion", "Bass", "SoundVolume", "Style" and "TieType".

chord = MusicChord["G DominantSeventh"];
chord["PitchList"]

Playback and preview

MusicChord is accepted as a Sound primitive. Its pitches share one start time and are drawn vertically in the piano roll:

Sound[{
  MusicChord[{"C4", "E4", "G4"}, 1/2],
  MusicChord[{"F4", "A4", "C5"}, 1/2]
}]

Named chords are resolved before playback; WLJS also supports named chord data that reaches the frontend directly.

See the Wolfram Language reference for supported chord names and properties.