Alas, this industrialized twelve-tone horse, dull on the outside and empty inside, constantly being perfected and dragged to a new Troy in shadow of an ideological war long since fought and won by responsible minds like Schoenberg, with neither systems nor scholarship for armor! Luciano Berio
The pre-World War I works of Schoenberg, Berg, and Webern, "give a glimpse of a new universe of emancipated discourse, unfortunately quickly abandoned when Schoenberg returned to the classical musical shapes upon adopting the twelve-tone system." Elliott Carter
Adorno arrived with a draft of his Philosophy of New Music, a dialectical critique of twelve-tone music, which Adorno himself felt, while writing, was already a departure from the theory of art he had spent the previous decades elaborating. Source: Internet
Analysis of recorded speech samples found peaks in acoustic energy that mirrored the distances between notes in the twelve-tone scale. Source: Internet
In August 1951, just after his first Darmstadt visit, Stockhausen began working with a form of athematic serial composition that rejected the twelve-tone technique of Schoenberg (Felder 1977, 92). Source: Internet
Free atonality The twelve-tone technique was preceded by Schoenberg's freely atonal pieces of 1908–1923, which, though free, often have as an "integrative element. Source: Internet