About us

that other quartet was born from a creative desire to expand the boundaries of the classical string quartet without losing the integrity and soul of this intimate and powerful genre. Young, ambitious and classically trained to the highest level, they are committed to a creative and open minded approach, producing provocative performances where communication and audience experience is the priority. They know the rules, but they also know how to break them.

that other quartet is an international ensemble and members have performed throughout Scandinavia, Europe and the rest of the world in venues such as the Berlin Philharmonie, the Royal Festival Hall and the Royal Albert Hall (London). Their members also play in other ensembles such as the On y va Ensemble, and are founding members of the c/o chamber orchestra. Members  have also worked with orchestras such as the Royal Philharmonic Orchestra (UK), the Swedish Radio Orchestra, Norrköping Symphony Orchestra, Nordiska Kammarorkesten, Norrlands Opera, Folk Operan, Opera på Skäret, Västerås Sinfonietta och Läckö Opera orchestra.

that other quartet love exploring the traditional classical string quartet repertoire but they specialise in arranging their own covers of contemporary pop music, jazz standards and folk music from around the world and creating their own unique and special programmes.


The members of that other quartet are:

Violin - Gaianeh Pilossian and Zaida Ponthin

Viola - Karin Wallmyr

Cello - Ruth Spargo


Individual members of that other quartet have a diverse range of experiences including orchestral playing, chamber music, recording, collaboration projects with dancers, filmographers, actors and computer engineers, performing flamenco, tango and balkan music, summer opera, working on the theatre stage, teaching and interactive therapeutic music work in hospitals. They are all experienced in playing for weddings and events: choosing repertoire that always suits and enhances the occasion.

For more information about us, please get in touch via:  info@thatotherquartet.se


Gaianeh Pilossian is a classical violinist who moves freely through genres in the music and performance world. She has a  Masters in Orchestra Studies from the University of Gothenburg and Bachelor in chamber music from the Musikhögskolan in Örebro. 

Gaianeh has been freelancing since 2012 and is an active chamber and orchestral musician, as well as regularly playing in jazz and pop constellations. She is a member of number of ensembles including string quartet ’that other quartet', jazz quartet ’Stockholm Jazz Strings’ and piano trio ’On y va Ensemble’. She has also played with Folkoperan, Norrlandsoperan, Scenkonst Sörmland, Örebro Länsteater, Stockholm Concert Orchestra and Gstaad Festival Orchestra.


Zaida is a classically trained violinist from Mariehamn, Åland. She is an active freelance chamber and orchestra musician in both Sweden and Finland. She has studied at the Fontys Academy of Music i Tilburg, the Royal College of Music in Stockholm and the University of Gothenburg.

She is member in both the string quartet 'that other quartet' and orchestra 'c/o chamber orchestra'.


Karin is active as violist and has been freelancing since 2008 when she graduated from the Royal College of Music in Stockholm. She often works in various symphony and chamber orchestras around Sweden, such as Swedish Radio Symphony Orchestra, the Royal Swedish Orchestra, Folkoperan in Stockholm, Uppsala Chamber Orchestra and others. This combined with chamber music projects and concerts with that other quartet.


Ruth is a Swedish British cellist and Music for Health practitioner living and working in Stockholm/Sörmlands. Ruth plays with several of the UK and Swedish orchestras and is contracted for many independent projects in Stockholm in both the classical and pop worlds. As an orchestral musician Ruth has played with both the RPO and RPCO in London and is a regular guest with several of the Swedish orchestras including Nordiska Kammarorkester, Norrköpings Symfoniorkester, Folkoperan, Opera på Skäret, Stockholm Concert Orchestra, Västerås Sinfonietta and Läckö Opera Orchestra. Ruth has trained and works with a specialised practice of music-making in health settings such as special schools, care homes and hospitals. Find out more here at Ruth's own homepage!