Editing Tone row (section)

{{Short description|Sequence of all twelve chromatic tones}}
{{Redirect|Reihe|the music journal|Die Reihe}}
{{Use dmy dates|date=June 2022}}
[[File:Schoenberg - Variations for Orchestra op. 31 tone row mirror forms.png|thumb|upright=2|"Mirror forms", P, R, I, and RI, of a tone row (from [[Arnold Schoenberg]]'s [[Variations for Orchestra (Schoenberg)|Variations for Orchestra]] Op. 31, "Called ''mirror forms'' because...they are identical".<ref>{{harvnb|Leeuw|2005|loc=154}}. Italics original.</ref>[[File:Schoenberg - Variations for Orchestra op. 31 tone row mirror forms.mid]]]]

In [[music]], a '''tone row''' or '''note row''' ({{langx|de|Reihe}} or ''{{lang|de|Tonreihe}}''), also '''series''' or '''set''',<ref name="Perle Serial">{{harvnb|Perle|1977|loc=3}}</ref> is a non-repetitive ordering of a set of [[pitch-class]]es, typically of the twelve notes in [[set theory (music)|musical set theory]] of the [[chromatic scale]], though both larger and smaller sets are sometimes found.