X3LIUS
Built from
Inside the
Process.
Blagovest Kisov is X3LIUS. Rapper. Producer. Mixing and mastering engineer. Founder and CEO of XYP3RN. Born in Asenovgrad, Bulgaria. Operating from Plovdiv.
The music started at 16. Guitar first, then tambura — the traditional Balkan string instrument that shaped his ear for texture and tone. Hip-hop followed. In 2016, he co-founded UpDown, a recording studio and creative collective, and began releasing independently.
“The only way to build the right AI audio tools is to be the kind of person who needs them. I am.”
— X3LIUS, Founder of XYP3RNCompetitors pay for user research. XYP3RN produces music.
From
Asenovgrad
to 106 Countries.
The Full
Catalogue.
Every release. Direct from Spotify. Click any card to load the player — 30-second previews without login, full tracks with a free Spotify account.
X3LIUS
Where Music
Shapes
Technology.
XYP3RN is an AI audio technology company and independent music label. Founded by Blagovest Kisov (X3LIUS). Headquartered in Plovdiv, Bulgaria. Operating globally.
Two divisions. One flywheel. Structurally unreplicable.
Every release is a data decision. XYP3RN Records serves two masters: the audience and the algorithm. Music produced in real sessions, under real production pressure — the only way to generate data that actually reflects how producers work.
Practitioner-built AI audio tools. Not academic. Not enterprise. Built by the kind of person who needs them. First product: TRACE. Roadmap: DEPTH → GRAIN → FORM → XYP3RN ENGINE (B2B API, 2028+).
Read the mix. Own the result.
AI Mix Analysis Plugin. VST3 / AU. macOS + Windows.
Scans transient structure, frequency balance, and dynamic range.
Suggests gain staging, EQ start position, compression approach.
Local processing. No audio leaves your machine. You decide.
Built from
Bulgaria.
Operating
Globally.
“Where Music
Shapes
Technology.”