Casals, a leading force in international chamber music, has established itself as one of the foremost string quartets after nearly three decades of its journey. Founded in 1997 at the Escuela Reina Sofía in Madrid, Cuarteto Casals has become a regular guest at many of the world’s most prestigious concert halls, including Carnegie Hall in New York, the Berlin Philharmonie, Cité de la Musique and Philharmonie de Paris, Vienna’s Konzerthaus and Musikverein, Amsterdam’s Concertgebouw, and Suntory Hall in Tokyo. Their profound devotion to the heart of every work is reflected in a discography of around twenty albums for the Harmonia Mundi label, spanning works by Bach, Haydn, Mozart, Schubert, Brahms, the complete Beethoven quartets, as well as 20th-century masters such as Debussy, Ravel, Bartók, and Ligeti.

A prize from the prestigious Borletti-Buitoni Trust in London enabled the group to assemble a unique collection of matching Baroque and Classical bows, used in repertoire from Bach to Beethoven, a reflection of their deep commitment to stylistic diversity. Their historically informed performances bring nuance across eras, while their artistry has also been profoundly shaped by long-standing engagement with living composers. They have maintained a close relationship with György Kurtág and premiered quartets by leading Spanish composers, including a concerto for string quartet and orchestra by Francisco Coll with the Orquesta Nacional de España, alongside commissions from Mauricio Sotelo, Benet Casablancas, Dahoud Salim, Lucio Amanti, Elisenda Fábregas, Aureliano Cattaneo, and Matan Porat.

In the 2025/2026 season, they embark on a landmark project: performing the complete Shostakovich string quartets, presented both in recordings and in full live cycles worldwide. The season also features tours across North America as well as extensive performances across Europe, with concerts at renowned venues such as Pierre Boulez Saal in Berlin, Gulbenkian in Lisboa, Wigmore Hall in London, Konserthus in Stockholm, String Quartet Biennial Amsterdam in Amsterdam and Musikverein in Vienna.