22.03.2013 - Ambo for alto flute and violin (2001) with Curious Chamber Players, festival Vårflod, Stockholm
08.03. 2013 - first performance of Terre de l'absence, commission by Nordic Voices,
Oslo International Church Music Festival 2013 , Norway
Järnåker Award 2012 for the piece Les sept vallées composed for recorder.
12.12 - Flux with Stockholm Chamber Brass in Hannover, Germany
11.12 - Isär with the ensemble Norrbotten NEO, Korpilombolo, Sweden
05.12 - Isär with NNEO at Center for 21st Century Music (http://music21c.org) Buffalo, United States.
02.12 - Isär with the ensemble Norrbotten NEO, Embassy of Sweden, Washington, United States
03.11 - Sondes with the ensemble E-XXI at World Music Days 2012 in Antwerp, Belgium.
12.10 - Isär with NNEO at festival Nordic Music Days 2012, Stockholm, Sweden.
11.09 - first performance of Flux for brass quintet during the Signal Brass Festival Gävle, Sweden
14.08 - Ciels, part I and IV, with Nordic Voices in Altafulla, Spain.
11.08 - Ciels, part I and IV, with Nordic Voices at Chan Centre For The Performing Arts, Vancouver, Canada.
29.06 - first performance of Far... for alto guitar and electronics by Stefan Östersjö at Båstad Chamber Festival, Sweden
29.06 - Ciels, part I and IV, with Nordic Voices at Båstad Chamber Festival, Sweden
25.05 - Ciels, part I and IV, with Nordic Voices at Hardanger Musikfest, Norway.
11.05 - Isär with NNEO at MADE-festival 2012, Umeå, Sweden.
20.04 - first performance of Isär by the ensemble NNEO at New Sweden Festival, New Sweden, in Piteå, Luleå (22.4) and in Stockholm (25.4).