Twelve-tone Technique
Schoenberg's 1923 method — order all twelve chromatic pitches into a row and derive the whole piece from its transformations, suppressing any sense of key.
What it sounds like
The twelve-tone technique (Zwolfontechnik) organizes a piece around a fixed ordering of all twelve chromatic pitches into a 'row' (Reihe) that becomes the source material for everything that follows. The row appears in four basic forms — original (P), retrograde (R), inversion (I) and retrograde-inversion (RI) — and each form can be transposed to any of the twelve starting pitches, giving 48 versions in total. By systematically circulating through all twelve pitches before allowing any to repeat, the technique suppresses the listener's tendency to hear a tonal center; the music doesn't resolve in the traditional sense and acquires a suspended, unresolved character. The technique itself doesn't determine register, rhythm or dynamics — those are still composer choices, which is why Schoenberg, Berg and Webern sound entirely different despite sharing the method.
How it came about
Arnold Schoenberg (1874-1951) developed the technique in Vienna over a decade following his initial atonal works of 1908-09. His Suite for Piano Op. 25 (1923) is the first work composed systematically with the new method. Schoenberg presented the technique as a logical answer to the exhaustion of common-practice tonality he saw in late Wagner and Mahler. His students Alban Berg (Violin Concerto, 1935) and Anton Webern (Symphony Op. 21, 1928) developed the method in opposite directions — Berg integrated it with quasi-tonal lyric writing, Webern stripped it down to extreme pointillistic concentration. The Nazi regime denounced the technique as 'degenerate music' (Entartete Musik); Schoenberg was Jewish and fled to the United States in 1934.
What to listen for
In Berg's Violin Concerto (1935) the row is constructed to spell out a Bach chorale near the end, so the piece can move between row-based atonality and explicit tonal reference — listen for the moment the row 'becomes' Bach. In Webern's Symphony Op. 21 (1928) the entire piece feels suspended in air; notice how short and sparse each gesture is. Schoenberg's own writing tends toward dense expressionist intensity.
If you only hear one thing
Berg's Violin Concerto (1935) is the strongest first entry — composed as a memorial for the young Manon Gropius, it is emotionally direct in a way most twelve-tone pieces aren't. Webern's Symphony Op. 21 (1928) follows as the opposite extreme. Schoenberg's Variations for Orchestra Op. 31 (1928) is the major orchestral statement.
Trivia
Stravinsky, who had spent decades publicly opposing Schoenberg's methods, adopted twelve-tone technique after Schoenberg's death in 1951. His late works — including 'Threni' (1958) and the Variations for Orchestra (1964) — use the method. The reversal became one of the most discussed shifts in mid-20th-century musical politics.
