Farben chord
3, "Farben" (German: "colors") by Arnold Schoenberg.Its unordered pitch-class content in normal form is 01348 (e.g., C–C♯–E♭–E–G♯), its Forte number is 5-z17,[2][3] in the taxonomy of Allen Forte.[4] The identity of the Farben chord, however, depends on ordering of its pitches in a particular voicing.According to Forte,[5] Schoenberg developed the pentad canonically in "Farben"[vague] (also titled "Summer Morning by a Lake" or "Chord-Colors"), while Alban Berg used the chord as one of three on which Act I scene 2 of Wozzeck is based.[3] The pentad is "almost octatonic" and has been called "a 'classic' atonal set type".