Fill out the form below to receive the latest news about upcoming LINE editions and projects.

SIX MICROPHONES

Environmental Studies

RELEASE DATE: JULY 25, 2025

Six Microphones is a site-determined composition of audio feedback by designer and composer Robert Gerard Pietrusko, which explores the mutually constitutive relationships among sound, space, and audience. 

Environmental Studies is an iteration of the piece created specifically for the Carpenter Center for the Visual Arts (CCVA) in Cambridge, MA—the only building in North America designed by famed architect Le Corbusier. Installed at the CCVA during the spring of 2015, the piece unfolded over the course of a month. This recording is an excerpt from that longer performance, captured on the evening of 9 April 2015.

Installed, Six Microphones illustrates the simplest and most legible diagram of feedback—a microphone pointed at a loudspeaker. The piece transforms the gallery from a space in which sound simply propagates, to the medium required to bring sound into being.

Six Microphones is site-determined: no sound is generated, it is only amplified. All tones and modulations produced during a performance emerge from the continual interaction between the system and the space itself. This is dependent on three elements: (1) the composition as it unfolds in time, implemented as a changing combination of microphone amplitudes, (2) the geometry and materiality of the space in which the system is sited, and (3) the presence of listeners within the space. Though the structure of the composition remains the same from one performance to the next, the acoustic result is contingent on the complex interaction of these three elements and cannot be anticipated beforehand. As such, there is no “intrinsic” or “original” version of the piece that exists independent from its spatial context.

Pietrusko’s previous LINE edition, the self-titled work Six Microphones (LINE_105), was released in 2019, coinciding with a beautiful 2LP vinyl edition published on Counter Audition, US.

Read a recent article about Pietrusko’s work, Pietrusko Brings His Immersive, Intermedia Experiments to Venice by Jesse Dorris here.

Bandcamp Apple Music TIDAL Reviews
Catalog:
LINE_166
Format:
digital
Edition:
open edition
Release:
July 2025
Tracklist:

Environmental Studies I (14:40)
Environmental Studies I (14:58)
Environmental Studies I (16:24)

Conceived, designed, and executed by Robert Gerard Pietrusko. © 2000/2015/2025

Recorded live 9 April 2015 at The Carpenter Center for Visual Arts, Cambridge, MA. Presented here in an abridged duration.

Photo: Jeff Elstone

Robert Gerard Pietrusko is a designer and composer living in Philadelphia, Pennsylvania. His work is part of the permanent collection of the Fondation Cartier pour l’Art Contemporain in Paris and has been exhibited in more than 15 countries at venues such as MoMA, Centre Pompidou, Akademie der Künste, and the Venice Architecture Biennale. Residencies include ZKM (2011), EMPAC (2011), MacDowell (2019), and the Rome Prize for Landscape Architecture (2021).

REVIEWS OF
Environmental Studies

  • Robert Gerard Pietrusko has long approached sound as if it were a form of urban planning: something to be mapped, shaped, and gently coerced into revealing its hidden structures. With Environmental Studies, though, he shifts from sculptor to ecologist. He doesn’t impose form—he invites it, then steps back to watch the environment negotiate with itself.

    The premise is almost disarmingly basic: a microphone pointed at a loudspeaker, a taut loop of attention between two devices that would normally behave themselves. But once this system is released into the Carpenter Center—the only North American building designed by Le Corbusier—the whole place starts behaving like a resonant organism. Concrete surfaces, circulation paths, gallery voids, the wandering public: everyone and everything becomes part of the instrument, whether they intended to or not.

    What’s striking is the absence of composed material. Nothing is written down, there is no “original” version hiding somewhere in Pietrusko’s notebook. All sound emerges from interaction: the system’s shifting parameters, the quirks of the architecture, and the fidgety presence of those who happen to pass through. It’s a bit like those conversations where you forget who started speaking – except the egos have been graciously removed from the equation.

    Across its three long sections, the album reveals an environment thinking out loud. Tones flutter like nervous eyelashes, drones bloom and collapse under the gallery’s geometry, and faint harmonic tensions drift around as if testing the limits of the room. Now and then a sudden shimmer or wobble appears – a reminder that Le Corbusier believed buildings should provoke, not simply behave.

    The irony is that this recording captures only one evening of a month-long installation in 2015. Yet the piece sidesteps nostalgia entirely: it belongs too deeply to the acoustics of its moment to sound dated. What you hear is not a fixed artwork but a trace of an encounter—an imprint of how space, system, and people briefly arranged themselves.

    Pietrusko, with his dual background in design and composition, continues to build bridges between disciplines that most artists keep in separate drawers. No wonder his work appears in major museums and biennales: he doesn’t so much compose music as create listening conditions, situations in which sound is coaxed into revealing its spatial DNA.

    Environmental Studies is a map without a key, an echo studying its own reflection, a quiet reminder of our scale. Sound doesn’t belong to us; it passes through, measures us, and moves on. If you let it, this album teaches you to follow it—not like a melody, but like a weather pattern.
    —chaindlk.com

  • In 2019, US composer, academic and sound artist Robert Pietrusko released Six Microphones – both the title of the album and his moniker for the project – a “site-determined composition of audio feedback” taken from a 2013 installation at New York’s Storefront for Art and Architecture. Created via a series of mics and loudspeakers, Pietrusko allowed the feedback to be shaped by the space itself, the acoustic qualities of the room and the audience’s movement within it, not altering the resulting sounds with any additional sonic manipulation or embellishment.

    The project brings to mind Alvin Lucier’s I Am Sitting In A Room, in which a recording of the artist’s voice is gradually eroded by a process of playback and re-recording in a resonant space. If that piece conjures a particularly human melancholy, Pietrusko’s 2019 piece is contrastingly concrete and chilly, like moving slowly through abandoned, echoey buildings.

    On Environmental Studies, Pietrusko presents a triptych that’s not so much inhabited as haunted. Taken from the artist’s 2015 installation at the Cambridge, Massachusetts Carpenter Center for the Visual Arts (CCVA), it comprises three movements. “Environmental Studies I” opens with apparent caution, the slow quietness of his earlier work rising into occasional peaks of hard, reverberant unease, though this intensifies with “Environmental Studies II” and “III”, whose drones are joined by clashes and bangs, like doors being slammed in some unseen part of the building. Pietrusko’s methodology is intended to ensure variation between each performance, so that the movement of audience members or fluctuation in a microphone’s amplitude will cause spectral anomalies to loom up in the mixture.

    Environmental Studies feels unsettling, like being shown a photograph of some ghost captured drifting along a hallway, or hearing the startling voice of a spirit recorded in some apparently empty and quiet room.
    —The Wire, UK

  • An excerpt from a gallery installation/performance from 2015, Philadelphia composer Robert Gerard Pietrusko’s Six Microphones is an exploration of space and frequency so pure that it’s almost breathtaking. The site-specific piece uses the half-dozen microphones of the title, directed at loudspeakers in order to create feedback. The score entails a manipulation of microphone amplitudes, in order to vary the sound of the feedback, but fluctuations are also triggered by the presence and movements of listeners within the gallery, as well as “the geometry and materiality” of the space itself. In the three-part, 45-minute recording, rich, warm tufts of drone billow and expand, clouds throwing off friction as they collide; every so often, a reverberant clang rings out deep in the mix, almost inaudibly. The microtonal play reminds me of Folke Rabe’s What?? or Kevin Drumm’s Imperial Horizon; a meditative exercise in the deepest of listening, it’s a stunning piece of drone music.
    —Philip Sherburne / Futurism Restated

  • An interesting concept made real and surprisingly listenable: three different environments (rooms), and six microphones set up in each room. By raising and lowering the volumes of each of them individually, you get a drone that morphs and changes into different sonic areas creating different pieces each time. A wonderful headphone listen for a great sound experiment. I have heard this three times and I’ll be going back for more. The subtle changes make this so musical, even though no instruments were used. I really love this. It makes me want to experiment more with environments.
    —citr.ca