ARCA is back: OSSO’s Open Days return in the second half of July with about twenty activities, including concerts, films, performances, installations, culinary events, a soundwalk, and a workshop. The program maintains a close connection to the artist-in-residence program, opening its doors to the public to share creative processes and works developed throughout the year, always prioritizing engagement with the community and the local area where we are based.
The activities take place primarily at the OSSO space, but also extend to other iconic locations in the village of São Gregório, namely the Salão de São Gregório, Armazém 75, and Café O Fidalgo. The event also features a culinary space dedicated to the communal sharing of light, local, and seasonal meals prepared by guest chefs.
We believe that investing in a more robust program—featuring outdoor activities spread throughout the village—fosters an annual moment of intensive sharing that brings together local, national, and international audiences. The dynamics and synergies resulting from this event not only strengthen the region’s cultural life but also affirm the association’s relevance to the development of this rural area.
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Limited capacity
Price: 6 Ossos / Day
Registration Here
Program
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FRIDAY 17 JULY
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MAFALDA COSTA & MARCELO REIS VESTÍGIOS DA FURNA
JOÃO SILVA & ANDRÉ HENCLEEDAY SUCURI
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SATURDAY 18 JULY
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SARA MARQUES & SANTIAGO TRICOT HOLDING LISTENING
JUJU BENTO O PULMÃO DE LUSTRE
JANTAR COMUNITÁRIO HUGO BRITO
OMNISPECTRUM JORGE QUINTELA, HENRIQUE FERNANDES & INTI GALHARDO
HARPOEMACTO ANGELICA SALVI & NUNO MARQUES PINTO
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SUNDAY 19 JULY
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JUJU BENTO O PULMÃO DE LUSTRE
VEREDAS
HIRUNDO HISTÓRIAS SEM FRONTEIRAS
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THURSDAY 23 JULY
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AIXA FIGINI VOCAL IMPROVISATION AND RHYTHM WITH SIGNALS
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FRIDAY 24 JULY
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VOZES EM IMPROVISAÇÃO COLECTIVA AIXA FIGINI AND WORKSHOP PARTICIPANTS
GONÇALO ALMEIDA RESONANT DEBRIS
@C & VISIOPHONE
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SATURDAY 25 JULY
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HUGO BERNARDO & BABAK & RADIN BAHARESTANI NÛR
MARIANA FERNANDES DEBAIXO DA TERRA
SAMUEL GAPP & JOÃO GHIRA ARTIGO INDEFINÍVEL
MARIANA DIONÍSIO, JOÃO CARREIRO & LUCAS XERXES REQUIEM
JANTAR COMUNITÁRIO GABRIELA SILVA
ENSEMBLE OF OTHER LIVING BEINGS
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SUNDAY 26 JULY
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SAMUEL GAPP & JOÃO GHIRA ARTIGO INDEFINÍVEL
HUGO BERNARDO & BABAK & RADIN BAHARESTANI LITANIA DO AR
CINECLUBE .CR
PAULO MORAIS & KÁTIA SÁ LUZONORA
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Installation
July 25 to 26
Installation — Adega — 18H00
SAMUEL GAPP & JOÃO GHIRA
ARTIGO INDEFINÍVEL
Samuel Gapp and João Ghira present at ARCA an exhibition-based interpretation of the work they developed during their artist residency in February of this year at OSSO: an installation that combines textile and sound materials in direct interaction with visitors.
As part of an ongoing artistic research project, *Artigo Indefinível* examines how perception and subjectivity are shaped by movement, sound, materials, and space as ecosystems in flux. The work manifests itself in a series of site-specific pieces, shaped by each context and by the presence and actions of the public, establishing a situational interaction that questions the very reality of the artistic object.
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Artigo Indefinível
Samuel Gapp
João Ghira
Concert
July 25
Performance — Salão São Gregório — 17H00
HUGO BERNARDO & BABAK BAHARESTANI & RADIN BAHARESTANI
NÛR
Hugo Bernardo – Voice, Tanbura e Metalophones
Babak Baharestani – Setar and voice
Radin Baharestani – keybords
Baharestani
Nûr (light) is an audio-visual project that brings together Babak and Radin Baharestani in collaboration with Hugo Bernardo. The project establishes a dialogue between the Persian radif, the ritual tambura, the percussive shimmer of metal, and the cadence of the voice, revealing the heritage and intersection of different artistic paths in a single improvised encounter.
Structured in eight movements, the performance blends improvisation and choreographed composition, drawing close to the modal universe of Dastgāh. The exploration of traditional stringed instruments, percussive metallophones, synthesized sound, and singing sets in motion an experience that unfolds in an indescribable sensory realm.
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Hugo Bernardo
Babak Baharestani
Thematic Workshop
July 23
Woekshop — Salão de São Gregório — 15h00 < 19H30
AIXA FIGINI
COLLECTIVE VOCAL IMPROVISATION AND RHYTHM WITH SIGNALS
Argentine singer, songwriter, and producer Aixa Figini invites the audience to join an improvised choir, transforming the voice, rhythm, and body into tools for collective creation.
Through games, vocal improvisation, body percussion, and world music, participants are challenged to explore their musicality in a dynamic and participatory environment. The activity is based on the “Ritmo com Sinais” method, a gestural language that allows for the direction of compositions and soundscapes in real time. In a playful and creative way, this workshop offers a space for experimentation that develops listening skills, coordination, and presence, valuing mistakes as part of the process and allowing each person to discover the potential of their voice in dialogue with the group.
Duration: 3 to 4 hours
Target audience: Open to participants with or without experience. Adaptable for musicians, singers, amateurs, and anyone interested in exploring their musicality.
Cost: 10 ossos per person
Capacity: 20 participants
Registration Here
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Aixa Figi
Vídeo
Soundwalk
July 18
Soundwalk — Eira — 17H30
SARA MARQUES & SANTIAGO TRICOT
HOLDING LISTENING
Holding Listening emerged within the framework of the research project [𝖋𝖎𝖓𝖎𝖘ˈ𝖙𝖊𝖗𝖗𝖆] Practices and Theories for the End of the World, and builds upon the performance-publication Undoing Listening (2025). Continuing the exploration of gestures and economies of attention, this audio walk traces a path through the landscapes of São Gregório as an exercise in expanded listening.
Between walking and listening, the project invites participants to make space for their surroundings, the invisible, and the inaudible, calling upon not only hearing but also seeing, contemplating, moving, and imagining. Holding Listening thus becomes a collective listening walk that seeks to sustain attention for a few moments and allow new imaginaries to take shape.
Registration Here
Max: 20 people
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Finisterra
Sara Marques
Santiago Tricot
[𝖋𝖎𝖓𝖎𝖘ˈ𝖙𝖊𝖗𝖗𝖆] Support: Fundação GDA (PT); DGArtes – Direcção Geral das Artes (PT); “Artistas Douro” – mala voadora&CMP (PT); “Reclamar Tempo” – CAMPUS Paulo Cunha e Silva (PT); fAUNA (PT), Artists’Shelter – Sekoia (PT), ApalleirA (ESP), Gnration (PT), CRL – Central Elétrica (PT), Binaural Nodar (PT), O Espaço do Tempo (PT).
Installation, Performing arts
July 18 to 19
18 Jul — Performance — Adega — 19H15
19 Jul — Installation — Adega — 11H < 15H
JUJU BENTO
O PULMÃO DE LUSTRE
Juju Bento joined OSSO’s long-term residencies in 2025 with the transdisciplinary project “O Pulmão de Lustre,” in which she combined artistic and sensory practices to explore the question, “What is ordinary light like?” The research explored the relationship between air, light, and the body, as well as the presence of night in everyday light, resulting in a sensory structure developed around the São Gregório neighborhood.
“O Pulmão de Lustre” is presented at Arca as a performative installation, combining sound, sculpture, and image in a visual and auditory choreography, offering an immersive environment rooted in gesture and sensibility.
The process culminates in the publication of a tactile, portable book—to be presented during the event—that reflects the project’s visual and material vocabulary.
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Juju Bento
Video
suported by The Swedish Arts Grants Committee
Concert
July 17
Concert — Sala Piano — 19H
MAFALDA COSTA & MARCELO REIS
VESTÍGIOS DA FURNA
Mafalda Costa – Candles
Marcelo Reis – Electronics
In *Vestígios da Furna*, Mafalda Costa and Marcelo Reis explore a unique interaction between fire and sound. The candle-sculptures created by Mafalda Costa—forms of great plasticity and organicity—become “living scores” for the sound processes triggered by Marcelo Reis, transforming the combustion process, the variations in the flame, and the liquefaction of the wax into sound. As the fire melts the wax, the sound is activated, but at the same time, the small candle-sculptures are destroyed. Between the slow passage of time of the candle and the precision of the computer, the project investigates how the rhythms of combustion can generate visual and auditory compositions, creating a soothing and deeply hypnotic performance.
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Mafalda Costa
Marcelo Reis
Concert-Installation
June 26
Instalação — Salão São Gregório — 11H < 15H
HUGO BERNARDO & BABAK BAHARESTANI & RADIN BAHARESTANI
LITANIA DO AR
As a legacy of the concert-performance *Nûr*, the collaboration between Babak, Radin Baharestani, and Hugo Bernardo remains in the space in the form of the installation “Litania do Ar.” Organized around an altar-table and a set of suspended objects or projected images, the piece constitutes a ritual device that articulates elements of memory, oracular simulacra, and a constellation of projections.
At this central altar, multiple symbolic layers intertwine, extending into the space the sensory and contemplative atmosphere evoked by the performance.
Concert
July 17
Concert — Eira — 21H
JOÃO SILVA & ANDRÉ HENCLEEDAY
SUCURI
André Hencleeday – Percussion
João Silva – Trumpet
In 2021, trumpeter, professor, and researcher João Silva joined forces with performer and composer André Hencleeday to develop ZYKLVS—an instrumental concrete music duo in which both artists explore unconventional objects and devices within a multidisciplinary performative environment geared toward active and immersive listening.
From this collaboration now emerges SUCURI, a new territory where compositions become sonic rituals that balance order and chaos, structure and spontaneity. The duo invites the audience to traverse a space where the boundaries between composition and improvisation dissolve and sound reveals itself as pure matter.
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SUCURI
Video
Movie
July 26
Cinema — Café Fidalgo “Amanhecer” — 16H00
CINECLUBE .CR
Acting as agents for the dissemination of cinema in the region, the Cineclube das Caldas da Rainha is dedicated to young auteur cinema, promoting access to the seventh art and highlighting Portuguese cinema. It holds biweekly screenings with guests, followed by open discussions that encourage critical dialogue.
The project extends cinema beyond traditional theaters, bringing screenings to cafés, community spaces, and outdoor venues, encouraging audience participation and engagement. The team is currently working to ensure that all projects—both current and future—are fully accessible to the community.
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CINECLUBE.CR
Concert
July 26
Concert — Armazém 75 — 19H00
PAULO MORAIS E KÁTIA SÁ
LUZONORA
Paulo Morais – Objects
Kátia Sá – Visuals
For ARCA 2026, the duo SÁMORAIS (Paulo Morais and Kátia Sá) presents LUZONORA, the first public sharing of a process they have been developing in informal improvisational contexts.
In the performance, the artists reactivate and expand an instrument-sculpture developed by Paulo Morais during a residency at OSSO—which gave rise to the piece OSSO ACASO—exploring the relationship between gesture, listening, and chance.
The performance now being presented establishes an immediate dialogue between sound and image: while Morais’s electroacoustic instruments investigate resonances and textures, Kátia Sá’s real-time projections manipulate light, objects, and optics, creating a visual field that continuously responds to and interacts with the sonic stimuli.
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Paulo Morais
Kátia Sá
Movie
July 19
Cinema — Café Fidalgo “Amanhecer” — 16H00
VEREDAS
The VEREDAS project presents a session dedicated to collaborative and community cinema, combining discussion and film screenings.
Positioned as a traveling showcase of Portuguese cinema, the project was conceived to take place in small towns, strengthening ties between filmmakers and audiences who are typically excluded from these circuits. Through a wide-ranging selection that spans genres, production scales, and generations of filmmakers, VEREDAS offers a decentralized perspective on national cinema, where each work engages directly with the identity and territory of the host location.
Its goal is to create a national traveling program whose identity is rooted in a collaborative network involving local creators, producers, distributors, and programmers.
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Veredas Pelo Cinema
Culinary
July 18
Culinary — Salão de São Gregório — 20H00
DINNER W/ HUGO BRITO
A leading figure at OSSO’s Open House events, Chef Hugo Brito is now an indispensable presence at the restaurant’s community dinners.
With his refined technique and sophisticated palate, he always makes a point of prioritizing local ingredients to create his delicious dishes—and anyone who’s had the privilege of tasting them knows exactly what we’re talking about.
Hugo Brito, former chef and owner of the Boi-Cavalo restaurant, earned degrees in Sociology and Fine Arts before settling on a career in gastronomy, having worked at 100 Maneiras and Delidelux.
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Concert
July 18
Concert — Salão de São Gregório — 21H30
OMNISPECTRUM
JORGE QUINTELA, HENRIQUE FERNANDES & INTI GALHARDO
Orchestrated by the Portuense Cultural Association Sonoscopia and the visions of Jorge Quintela, Henrique Fernandes, and Inti Galhardo, *Omnispectrum* emerges as a performance that evokes the memory of territories where life and death intersect. Inspired by animism, the work presents an entirely analog performative device in which cinematic landscapes, real-time sound manipulation, and bodily gestures intertwine to open up a space of ritual. In this encounter, body, ruin, and landscape create a tension, revealing dimensions of the invisible in which the ephemeral takes on a presence and silence becomes matter. Featuring film footage of the Atacama Desert (Chile), the territory of the Chinchorro people, the work articulates ancestral memory, ecology, and spirituality, unveiling the web of relationships that unites humanity with nature.
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Sonoscopia
Vídeo
Co-production: Lisboa Soa, Space Festival, Bando à Parte, Ceis8, ÁNCORA Coop
Concert
July 18
Concert — Sala do Piano — 22H45
HARPOEMACTO
ANGELICA SALVI & NUNO MARQUES PINTO
HARP’OEMAS
Angélica Salvi – Harp
Nuno Marques Pinto – Voice, Poems
Nuno Marques Pinto and Angélica Salvi present HARP’OEMAS, a project that blends poetry, music, and performance to create an interdisciplinary whole—in harmony yet simultaneously in tension, fostering a rupture. The harp thus evokes an unusual atmosphere where experimentation plays a central role in exploring new territories. The voice also functions as a performative instrument, seeking to establish a connection not only with the harp but also with the audience in the form of a ritual.
As they themselves describe it:
The encounter between a Harp and a Voice,
the creation of a new language,
digging Holes everywhere,
a whirl of heads,
a shot in the bumpy darkness of wonder.
HARPO MARX IN AN OPERA VERSION.
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Harpo Acto
Vídeo
Vídeo
Movie
July 19
Cinema — Café Fidalgo “Amanhecer” — 16H00
HIRUNDO
HISTÓRIAS SEM FRONTEIRAS
The Association for Critical Thinking, Culture, and Development – Hirundo presents the “Stories Without Borders” project at Arca, an educational initiative that uses animated films as a pedagogical and inclusive tool, promoting the personal and social development of participants, especially young migrants. Through a practical and interdisciplinary approach, participants create short films based on real-life stories in a collaborative environment.
Based on “learning by doing,” the project addresses the integration challenges associated with cultural, linguistic, and social diversity by involving participants in all stages of the creative process and developing their technical, artistic, and socio-emotional skills.
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Hirundo
Vídeo
Support: Fundação Calouste Gulbenkian e Fundação “la Caixa” através da iniciativa PARTIS & Art for Change
Partners: Cola Anima; Centro de Formação Maia Trofa, Câmara Municipal da Maia
Concert
July 24
Concert — Pátio Osso — 18h00
VOZES EM IMPROVISAÇÃO COLECTIVA
AIXA FIGINI AND WORKSHOP PARTICIPANTS
The results of the collective vocal improvisation and “Ritmo com Sinais” workshop, led by Aixa Figini, will be presented to the public in a relaxed session in the OSSO courtyard.
The audience will be able to witness the realization of this collective work, in which the group uses voice, body, and percussion to structure musical compositions based on improvised dialogue, mutual listening, and spontaneous coordination.
Concert
July 24
Concert — Sala do piano — 19h00
GONÇALO ALMEIDA
RESONANT DEBRIS
Gonçalo Almeida – doublebass and turntables
*Resonant Debris* is Gonçalo Almeida’s latest solo work, which explores the amplified and prepared double bass in dialogue with manipulated turntables. Through repetition, texture, and resonance, deep drones, subtle harmonics, mechanical noises, and fragmented rhythms emerge from the friction between wood, metal, vinyl, and the needle. Amplification reveals hidden details and expands the instrument’s resonance, while the turntables add loops, skips, and surface noise as compositional material. An interactive lighting system reacts to the sound, transforming the music into atmosphere and movement.
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Gonçalo Almeida
Concert
July 24
Concerto — Eira — 21h00
@C & VISIOPHONE
Pedro Tudela & Miguel Carvalhais – Computars and sound
Rodrigo Carvalho – Computar, Lights and Visuals
The duo @c, consisting of Pedro Tudela and Miguel Carvalhais, has spent the past 25 years developing a practice marked by rigorous experimentation with computer-generated sound, which has taken the form of hundreds of performances, recordings, and installations.
On this occasion, they are joined by artist Rodrigo Carvalho (Visiophone, a member of the Openfield Creativelab collective and the Boris Chimp 504 project) to present 30×N, an audiovisual performance featuring a modular system and three performers who interact in a generative composition involving sound, lights, and visuals. 30×N explores the use of computers as creative agents and partners, with each performance emerging from the encounter between the machines and the performers.
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30xN
Video
Concert
July 25
Concert — Sala Piano — 19H00
MARIANA DIONÍSIO, JOÃO CARREIRO & LUCAS XERXES
REQUIEM
João Carreiro – Guitar
Mariana Dionísio – Voice and electronics
Lucas Xerxes – Guitar and electronics
A project conceived by Mariana Dionísio and João Carreiro that explores the iconic text of a funeral mass—in its original Latin—to rethink the format of a Requiem.
In this presentation, they are joined by artist Lucas Xerxes, who contributes to the construction of electronic instruments.
REQUIEM reveals itself as a flexible and adaptable form, adjusting to different collaborations and contexts to pay tribute to diverse causes and cultures. Although rooted in the tradition of sacred music, it incorporates the spontaneity of improvised music, using group dynamics that make each performance unique and distinct from the compositional processes typical of the genre.
Based on open-ended and exploratory material, the project seeks to balance awe and beauty in an evocation that stands as a tribute in constant transformation.
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João Carreiro
Mariana Dionísio
Lucas Xerxes
Culinary
July 25
Culináry — OSSO — 20H00
JANTAR COMUNITÁRIO
GABRIELA SILVA
Gabriela Silva is from São Gregório, and she was one of the first people in the village to open her doors to OSSO; in doing so, she brought the entire village on board.
She is also the caretaker of a small museum filled with antique objects from the village’s history, which she has collected over the years. There we find clothing, various tools, and implements—memories of life in a village that refuses to fade into oblivion. She also cooks at festivals and gatherings, with the generosity of someone who has learned that feeding others is a way of caring for the world.
When OSSO arrived in São Gregório, she came to meet us, to find out what was going on, and brought people with her. Tonight, she’s the one cooking for everyone.
Performing arts
June 25
Performance — Eira — 21h30
MARIANA FERNANDES
DEBAIXO DA TERRA
During her residency at OSSO, Mariana Fernandes integrated the local territory into her creative process, mapping the landscape through direct contact with the earth’s forms, materials, smells, and textures, and allowing these impressions to become the substance of her compositions. Inspired by local traditions and topography, she translated this experience into her ceramic pieces through a context-specific approach that linked place and artistic practice.
The project’s final phase consists of a ritual in which she buries the objects created by herself and her local guests, so that one day they may be rediscovered and spark curiosity about the history of this place. Each piece is integrated into the landscape through a performative ceremony, in an act that pays homage to the territory and the people who inhabit it. Fragments of time are buried—a true archaeology of the future—where the funeral rite opens up the possibility of eternal life and an infinite dialogue with what is yet to come.
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Mariana Fernandes
Concert
July 25
Concerto — Eira — 21H30
ENSEMBLE OF OTHER LIVING BEINGS
João Almeida e Yaw Tembe – trumpets an conduction
João Pereira – drums
Carlos Godinho – percussion and electronics
Álvaro Rosso e Bernardo Álvares – double bass
Joana Guerra e Helena Espvall – cello and voice
Norberto Lobo – electric guitar
Bernardo Tinoco – saxophones
Teresa Costa – flute
Leonor Cabrita – voice and piano
Raquel Lima – voice
The Ensemble of Other Living Beings is an organization that brings together creators from different backgrounds, with the aim of experimenting with new forms of production and actively rethinking the structures of the collective imagination through sound. It is an expanding orchestra, open to the cross-pollination of diverse forms of expression and to the listening relationships that emerge from the inevitable dynamics of interdependence and coexistence.
The project blends folk traditions with contemporary approaches to composition—spanning jazz, free jazz, electronic music, and other musical languages yet to be categorized.
They view the phenomenon of sound as a means of transforming the sensory world, a space where new ways of relating to the visible and the invisible are explored through small rituals that give rise to ephemeral mythologies in constant flux.
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Facada records
This project is supported by Direção-Geral das Artes