In re: ‘Experimental Music’

John Cage is universally associated with the phrase experimental music. But what did that phrase mean, for Cage and for Cage’s predecessors? I begin with Cage and Lejaren Hiller, both writing important texts on ‘experimental music’ in 1959. From there, I trace the phrase backwards, eventually reaching Emile Zola, Gertrude Stein, and William James. A final section traces the phrase forward to Cage and Hiller’s collaboration on HPSCHD (1969)

Speculative Sound Circuits

HAMU, Prague and Český RozhlasAlternative approaches to electronic music through speculative sound circuits are discussed. These approaches borrow from emerging theories in speculative design and the work of designer/theorist Anthony Dunne. Dunne’s post-optimal technological object is also discussed along with slow tech and the slow movement. George Brecht’s Water Yam and the absurdist creative strategies of the Fluxus movement are seen as prototypes for speculative design. With particular reference to electronic music and speculative sound circuits, the instruments of Percy Grainger and Gijs Gieskes are considered. Speculative sound circuits are viewed as part of a broader theoretical framework in relation to critical making, as referred to by Garnet Hertz, John Cage’s ‘music of objects’ and David Tudor’s ‘composing inside electronics’. Finally, a specific example of the author’s work as Dirty Electronics, Making for Radio and Speculative Circuit, are offered up to illustrate speculative sound circuits along with spontaneous and intuitive approaches to circuit building, rapid prototyping strategies, and making as a processual part of performance. Indeterminate and chance-based music, models for extended instrumental techniques, and questions arising concerning physiologies in performance and human-machine interaction are also reflected upon

Coronal Heating as Determined by the Solar Flare Frequency Distribution Obtained by Aggregating Case Studies

Flare frequency distributions represent a key approach to addressing one of the largest problems in solar and stellar physics: determining the mechanism that counter-intuitively heats coronae to temperatures that are orders of magnitude hotter than the corresponding photospheres. It is widely accepted that the magnetic field is responsible for the heating, but there are two competing mechanisms that could explain it: nanoflares or Alfv\'en waves. To date, neither can be directly observed. Nanoflares are, by definition, extremely small, but their aggregate energy release could represent a substantial heating mechanism, presuming they are sufficiently abundant. One way to test this presumption is via the flare frequency distribution, which describes how often flares of various energies occur. If the slope of the power law fitting the flare frequency distribution is above a critical threshold, $\alpha=2$ as established in prior literature, then there should be a sufficient abundance of nanoflares to explain coronal heating. We performed $>$600 case studies of solar flares, made possible by an unprecedented number of data analysts via three semesters of an undergraduate physics laboratory course. This allowed us to include two crucial, but nontrivial, analysis methods: pre-flare baseline subtraction and computation of the flare energy, which requires determining flare start and stop times. We aggregated the results of these analyses into a statistical study to determine that $\alpha = 1.63 \pm 0.03$. This is below the critical threshold, suggesting that Alfv\'en waves are an important driver of coronal heating.Comment: 1,002 authors, 14 pages, 4 figures, 3 tables, published by The Astrophysical Journal on 2023-05-09, volume 948, page 7