This month's clip features that most rare type of rarity: the truly historically-important, yet virtually-unknown, work. That the very first complete printed 12-tone work in history (published in 1923) has been heard so rarely is doubly tragic, as it also happens to be a very fun piece.

Klein (the "inventor" of the so-called "Mother Chord," which he employs in this work) preferred the evocative term "ex-tonal" to the popular options, "post-tonal" and the ubiquitous "atonal," and his sense of the absurd is followed through in the subtitle ("an extonal self-satire") and his attribution ("Self-tormentor").

Listen here to the opening of the piece, an effective evocation of a machine eventually going haywire. Schuller gets a similar effect, much later, in his Twittering Machine (Klee).