BRAIN WAVES @ VIDENIE: An Immersive Audiovisual Series SOFIA, Bulgaria - Prepare for a new chapter in Sofia's cultural landscape as the BRAIN WAVES Listening Sessions, a celebrated concept curated by DROB, arrives at VIDENIE. Marking its debut on Friday, 20 February 2026, the series opens with the visionary Ukrainian artist Volodymyr Gnatenko for a special live performance.