First Prize winners at both the 2025 Wigmore Hall International String Quartet Competition and the Bordeaux International String Quartet Competition, Opus13 is rapidly building a reputation on the international chamber music scene. In 2026 they were named recipients of the prestigious Borletti-Buitoni Trust Award.

Named after Mendelssohn’s youthful and passionate A Minor Quartet, Op. 13 — the first piece they ever played together —the quartet was formed in Oslo in 2014 by four teenagers eager to dive into the world of string quartets. Opus13 comprises Norwegian violinists Sonoko Miriam Welde and Edvard Erdal, violist Albin Uusijärvi and cellist Daniel Thorell, both from Sweden.

In addition to performing core string quartet repertoire by composers such as Mozart, Bartók, and Schubert, Opus13 are passionate ambassadors of Nordic classical and contemporary music, frequently programming works by Grieg, Stenhammar, Tarrodi, Byström, and Fagerlund. They also enjoy genre-crossing collaborations, having performed with Norwegian folk and popular music artists including Gjermund Larsen Trio, Sissel Kyrkjebø, and Sver. Read more here.