XV XXVII III XXI IX: Variations & Coda

‘XV XXVII III XXI IX: Variations & Coda’ by composer Luka Aron is a suite in four parts, in which a selected acoustic ensemble, consisting of bass clarinet, contrabass, euphonium, foghorn organ, harpsichord, serpent, shō, and trumpet coalesces with analog as well as digital synthesis, into one unified mass of sound.

Following 2022’s ‘Tinctures’, which centered on raw and unadorned chord-zither and pipe organ recordings in just intonation, Luka Aron’s new work expands the landscape manifold. Emerging as his solo debut on Warm Winters Ltd., ‘XV XXVII III XXI IX: Variations & Coda’ connects to tropes first developed on Minua’s ‘Simulacra’ (also released by the Slovak label), to which Aron contributed significantly. An opaque juxtaposition between the steadfastness of electronic sound synthesis and the fragility of the human touch inherent in acoustic instrumentation is a through line in Aron’s work and at its most developed here.

By painstakingly tuning sustained tones towards precision upon occupying the same pitch space, the various timbres in ‘XV XXVII III XXI IX: Variations & Coda’ are as much canceled out as reinforced, resulting in flux states of spectral fusion. This effect is further achieved through traversing a labyrinthine structure of multiple closely related overtone series, serving as a harmonic framework for the piece’s ever-shifting bedrock. Via the appliance of heavy distortion, a secondary structure (that, in fact, exposes the undertone series) is gradually unveiled: like light rays meeting the surface of water, partially reflecting back to air, and refracting at once, as they pass from one medium to the other.

As per the title, numerical relationships are ubiquitous here—and yet, this is not music merely arising from mathematical calculation; instead, it is one shaped by the direct experience of sound phenomena themselves, prior to preconceived ideas or beliefs about their potential symbolic meaning or function. During studies at the Royal Academy of Music in Stockholm, Aron spent days on end observing the physiology of hearing through minute listening tests, not seldomly resembling a visit to the ear doctor. The specific tone combinations he discovered in this empirical process quite instrumentally “play the ear” and are potent catalysts for reaching states of mind that transcend the mundane, challenging matters of subject-object relations. As such, ‘XV XXVII III XXI IX: Variations & Coda’ stems from an artistic approach where one’s perception is not only an endpoint but also a beginning—and the composer’s task is to uncover what is already present.

On a structural plane, the pieces stem from multi-layered golden mean relationships that permeate all levels of the composition, ranging from the overall arc to the formal and rhythmical aspects of each variation. Every sound event spirals out of the previous one, and the final instant is determined right at the initial stroke before ever unfolding over a total runtime of 38 minutes. Put forth by an almost self-generating system (here, the math does come into play), the time domain is determined with minor algorithmic interventions set beforehand. Gradually, the omnipresent sequence nests in consciousness and instantiates arresting attention in the listener.

With Aron operating the Buchla 200 and EMS VCS3 synthesizers, in addition to the SuperCollider and Pure Data coding environments, the cast of musicians includes an array of Stockholm-based artists, such as Mattias Hållsten on shō—a Japanese mouth organ—and Susana Santos Silva on trumpet (both members of the late CC Hennix’ Kamigaku ensemble), just intonation contrabassist Vilhelm Bromander, along with Amina Hocine and her unique self-built foghorn organ. Frequent collaborators Fabian Willmann on bass clarinet and Raphaël Rossé on serpent and euphonium join from the electroacoustic group Minua, which Aron co-founded.