Arnold Schoenberg's Piano Concerto, Op. 42 (1942) consists of one movement with four sections: Andante, Molto allegro, Adagio, and Giocoso. It features use of the twelve-tone technique and only one tone row, though he does at points take some liberties with the permutation of the row.

Lou Harrison (quoted in Miller and Lieberman 1998, p.22) describes that, "One of the major joys...is in the structure of the phrases. You know when you are hearing a theme, a building or answering phrase, a development or a coda. There is no swerving from the form-building nature of these classical phrases. The pleasure to be had from listening to them is the same that one has from hearing the large forms of Mozart....This is a feeling too seldom communicated in contemporary music, in much of which the most obvious formal considerations are not evident at all....The nature of his knowledge in this respect, perhaps more than anything else, places him in the position of torch-bearer to tradition in the vital and developing sense."

Source

• Miller, Leta E. and Lieberman, Frederic (1998). Lou Harrison: Composing a World. Oxford University Press. ISBN 0195110226.