Austrian composer, arranger, media artist, and software developer. He studied composition and music theory, jazz composition and computer music. He currently lives in Vienna. His artistic work spans various genres including contemporary classical, jazz, experimental electronics, and media art. He produces music, sound design and video for theatre and dance productions and arranges music for all kinds of ensembles and instruments, including big bands and orchestras. 

His music has been performed worldwide by renowned ensembles and musicians, including Klangforum Wien, Nadar Ensemble, Studio Dan, Black Page Orchestra, and Schallfeld Ensemble. His computer music has been presented notably at the International Computer Music Conference, New Interfaces for Musical Expression, and Linux Audio Conference. He has received numerous grants and prizes for his works. In 2020 he was one of the two prizewinners in the 8th International Johann Joseph Fux Opera Composition Competition in Graz. The awarded opera Avatara was premiered in the autumn of 2022 at the Musikprotokoll festival. In 2021 he won the prestigious Erste Bank Composition Prize. In 2023, he had a portrait concert dedicated to him at the Wien Modern festival. 

Ressi collaborates closely with clarinettist Szilárd Benes, focusing on audio-visual concept improvisations with pop culture references and computer game elements. The artist is currently pursuing an artistic doctorate at the Anton Bruckner Private University for Music, Theatre and Dance in Linz, researching the topic of open form in computer game environments for audio-visual artworks. 

As a software developer, Ressi helps with the technical implementation of art projects and regularly contributes to open-source projects such as Pure Data and Supercollider. He publishes his own software under open-source licenses. 

Selected works: GIF Frenzy for five instruments, electronics and video (2016), Der Ghul for large symphony orchestra and jazz big band (2016), il faut cultiver notre jardin, vous savez pas? for six instruments, electronics and actor (2017), game_over_0.1.1 for clarinet with motion sensor and computer game (2017), Holy Ghost for large ensemble, solo saxophone and tape (2017), batsu gēmu I for saxophone, drums, keyboards, electronics and video (2017), batsu gēmu II for ensemble, electronics and video (2017), Terrain Study for performer, electronics and virtual reality system (2018), Scattered Memories for large ensemble and turntable (2018), Études d’exécution accidentelle for sampler (2018), Random Access Memory for jazz ensemble and electronics (2019), 5 Gedichte for symphony orchestra and mezzo-soprano (2020), Avatara, short opera for 13 instruments, two singers, electronics and virtual reality system (2021), short stories for large ensemble and tape (2021), game over 4.0 for clarinet and e-guitar with motion sensors and computer game (2021), Synaptic City, acousmatic piece (2022), Am Anfang war das A for ensemble and electronics (2022), rizumu gēmu for five instruments and live score (2023), Arcade/Arcadia for ensemble and electronics (2023).