C-MO

Simeon Zhelyazkov, known as C-MO, is a Sofia-based Bulgarian singer, songwriter and producer whose music moves between contemporary pop, alternative R&B, soul and electronic music. Amsterdam-trained and originally known as the frontman of 7-piece funk band Funky Miracle, C-MO has spent years performing across Bulgaria and Europe, from festival stages to opening for James Arthur in Sofia. His collaborative work has connected him with artists and musicians across genres and borders, including long-time collaborator TromBobby and Japanese guitarist Kazuki Isogai. His solo catalogue began with *APEIRON* (2024), a soulful and introspective debut EP released via Stereofox. In 2026, C-MO followed it with *VESPER*, a six-track project that pushes his sound toward contemporary pop, alternative R&B, UK garage and electronic production. Alongside his own releases, C-MO works extensively as a songwriter, producer and session vocalist, collaborating with some of Bulgaria’s leading artists while building an increasingly international network of writers and producers. With new Bulgarian-language music currently in development, C-MO continues to move between genres, languages and scenes — treating each release as a new extension of his sound.