He released his final album this February.

Swedish composer and sound artist Marcus Fjellström has died, according to a statement released on the website of his longtime label Miasmah Recordings.

“It is with a heavy heart that we share with you the news that our dear friend Marcus Fjellström passed away earlier this month. It feels unreal to have to write these words and to accept that he is no longer with us in life. Marcus was one of the most beloved, funny and warm-hearted people, and we will miss him immensely. He will live on through shared memories and the incredible legacy of his compositions, sound and visual work. RIP MF,” it reads.

Born in 1979 and classically trained as a composer, Fjellström was as comfortable working with the Swedish Royal Ballet and the Scottish Chamber Orchestra as he was releasing bracing experimental recordings on Lampse and Miasmah. He later embraced filmmaking and created many audiovisual projects throughout the last decade.

Citing a wide range of influences including Autechre, György Ligeti, John Cage, Bernard Herrmann, Claude Debussy and Twin Peaks‘s Angelo Badalamenti, Fjellström often liked to fill his pieces with dynamic, clashing atmospheres. That quality shined on his final release earlier this year, Skelektikon, a record that was equal parts lullaby and nightmare.

Revisit the Skelektikon below and explore more of his great career here.