The Quartz Quintet is an ensemble formed by a string quartet and accordion, created in 2017 under the artistic guidance of accordionist Paulo Jorge Ferreira. Its members are violinists David Seixas and Sara Martins, accordionist José Fangueiro, violist Ana Peixoto, and cellist Diogo Martins.

The ensemble’s main objective is to promote the repertoire composed for this unique formation, while also encouraging and supporting young composers by providing opportunities for the creation of new works and/or projects.

The Quartz Quintet has been distinguished with several national prizes, including 2nd Prize (Higher Level) and 1st Prize (Higher Level) at the Folefest Competition in 2018 and 2019, respectively, and 2nd Prize (Higher Level) at the Antena 2 Young Musicians Prize in 2021.

In 2019, the group took part in the Chamber Music Residency promoted by the Portuguese Philharmonic Academic Orchestra, and later in the Chamber Music Residencies of the Orquestra Sem Fronteiras (2020/21), which provided the opportunity to perform several concerts. In 2021, the ensemble held an Artistic Residency at the Fábrica da Criatividade in Castelo Branco, promoted by the Dias da Música Electroacústica Project, where three works dedicated to the group by young composers were premiered and recorded for a CD.

The Quartz Quintet has also performed at several festivals, including the 42nd edition of the Paços de Brandão International Music Festival (2019), the 7th edition of the Marvão International Music Festival (2021), and the 2nd edition of the chamber music cycle Caminhos Conjuntos of the Festival À Corda (2022).

They have performed in venues such as Casa da Música (Porto), the Machado de Castro National Museum (Coimbra), Fundação Lapa do Lobo, Fábrica da Criatividade (Castelo Branco), Casa Municipal da Cultura (Pedrógão Grande), among others. In 2022, the Quartz Quintet performed at the Auditorium of the Lisbon School of Economics and Management and at the National Museum of Ancient Art, in Lisbon, with live broadcast on Antena 2.