The São Miguel-based chamber ensemble will make its first appearance at the Cordas World Music Festival on October 5 in Madalena. With two violins, viola and cello, Quarteto Quadrivium brings another dimension to a festival devoted to the many languages of string instruments.

A string can be plucked or bowed, made to accompany a traditional song or entrusted with the architecture of chamber music. It can belong to the intimacy of an Azorean Viola da Terra, to the gathering of a community ensemble, or to four musicians listening so attentively to one another that separate instruments seem to breathe as a single voice. That diversity lies at the heart of the Cordas World Music Festival, which returns to the municipality of Madalena, on Pico, from October 1 through 5, bringing together plucked and bowed strings and musical traditions that demonstrate how much of the world can be contained within vibration.

For the first time, Quarteto Quadrivium will join that musical geography. The ensemble performs on the festival’s closing day, October 5, at 4:30 p.m. in the Madalena Auditorium. The afternoon hour is intentional. Terry Costa, artistic director of MiratecArts and founder of Festival Cordas, explains that concert times are deliberately varied—from noon performances to traditional evening concerts and occasional afternoon matinées—to make the program accessible to different audiences. With October 5 a national holiday in Portugal, an afternoon chamber concert becomes particularly appropriate: music occupying the middle of the day rather than waiting for nightfall.

Quarteto Quadrivium was founded in 2017 as the resident chamber ensemble of Quadrivium Associação Artística, based on São Miguel. Its purpose from the beginning has been both artistic and cultural: to encourage chamber-music performance while expanding its presence within the Azorean musical environment. Its repertoire crosses periods, aesthetics and styles, incorporating Portuguese compositions for string quartet alongside works from the broader chamber tradition. The ensemble has performed throughout the Azores and on mainland Portugal—including Braga, Belmonte, Seia and Lisbon—and has also appeared internationally in Málaga, Spain.

The quartet brings together Ana Oliveira and Francisco Ramos on violin, Mariana Moreira on viola and Simão Galego on cello. In the classical string quartet, four individual musical lines must continually negotiate with one another—sometimes conversing, sometimes challenging, sometimes supporting, sometimes disappearing momentarily into a collective sound. It is precisely this art of listening that makes chamber music such an intriguing addition to Cordas: four musicians, four instruments and no place for one voice to exist entirely without the others.

Their appearance also widens the festival’s understanding of what the culture of strings can mean in the Azores. Cordas opens on October 1, International Music Day, with Tuna de Cordas Ilha Negra. October 2 celebrates the Day of the Viola da Terra through school visits and the distinctive two-heart Viola associated with Marcos Fernandez. The festival continues through October 5, when Spanish musician Hector Belda Om joins the closing-day program. Quarteto Quadrivium’s participation is supported through a project involving DGArtes and the Azorean Regional Directorate for Culture, while the festival itself is developed by MiratecArts in partnership with the Municipality of Madalena, with support from the INATEL Foundation and the Regional Directorate for Culture. The complete program is available through Festival Cordas and its official Facebook page.

There is something especially fitting about chamber music arriving on Pico within a festival called simply Cordas—Strings. The name does not impose borders between classical and traditional, local and international, bowed and plucked. Instead, it asks audiences to listen to the extraordinary number of musical worlds that can begin with something as elemental as a stretched string.

On an island dominated by a mountain and surrounded by ocean, four musicians will sit together on an October afternoon and begin to play.

Four instruments will become a conversation. And for a little while, Pico itself will become the chamber in which that conversation resonates.

Based on a Press Release from MiratecArts, Terry Costa, director. The photo is also from MiratecArts, Pico Island, Azores.