Oh.
Olivia Hadjiioannou, known as Oh., is a multi-instrumentalist, composer, and producer whose music transcends genre—fusing progressive metal, cinematic textures, and avant-garde spirit into bold, emotionally charged works. She made her mark with the 24-minute debut epic Sleeping World (2013), followed by genre-bending tracks like Trials, a resonant anthem of resistance during the economic crisis, and Metallia (2018), a prog-metal short film that garnered acclaim at festivals around the globe.
