O. is an experimental rock duo from London, formed by drummer Tash Keary and guitarist-singer Joe Henwood. Known for their unique setup and powerful sound, the duo creates a blend of rock, jazz, and punk with intense live energy. Without a bassist, they use Henwood’s baritone saxophone and Keary’s intricate drumming to create a full, resonant sound that’s highly rhythmic and bass-driven. Their innovative style and chemistry have positioned them as an exciting act in the UK's underground music scene.