Sieren is the maiden name of Matthias’ mother and also his the alias under which he started to release his first free tracks in 2011. It was not until a few years later that he began to make the most of his love for field recording and experimental soundscaping and is now throwing his full force into music. 2013 marked the year of his debut-release on Project:Mooncircle and Finest Ego, various collaborations with artists like Robot Koch, a guestmix feature on BBC Radio 1 / 1Xtra and a performance at RBMA Radio. 2014 was marked with releases on Shades Recordings and Ki Records as well as a remix for Hundred Waters on Owsla. In 2016 Sieren released his debut LP "Transients of Light" through Christian Löffler's Ki Records imprint. He is currently signed to R&S Record's acclaimed Apollo Records offshoot where he has released multiple EPs and collaborated with fellow label co-hort Synkto. Apart from spending most of his time on music, he is currently working as a product manager at Ableton.