Armin van Buuren's weekly trance radio show and event brand — the most-listened-to dance radio show in history.
Definition
A State of Trance (ASOT) is the weekly trance radio show launched by Armin van Buuren on Dutch radio in June 2001 and now broadcast across more than 80 stations worldwide, with an estimated audience of 40 million weekly listeners. Each episode is two hours of new and exclusive trance, featuring premieres, ID tracks, and the host's curated picks. ASOT has expanded into a year-round event brand, with annual ASOT festivals filling stadiums in the Netherlands, Mexico, India, and elsewhere. Episode milestone numbers — ASOT 500, 600, 700, 800, 900, 1000 — are celebrated as global trance occasions, often with multi-day events and live broadcasts. ASOT is widely regarded as the genre's most important institution.