a three-day psytrance festival held on the banks of the aare river, organized by the flying mystic, a swiss collective formed in 2016 from the merger of two earlier party projects, "flying circus" and "mystica." the event runs from friday through sunday, opening with a chill-out day focused on ambient and dub before moving into full psytrance programming across the weekend.

the flying mystic runs psyriver as one of two recurring festivals in their calendar, alongside a separate late-summer event at a castle site in another region. psyriver is an established fixture on the swiss and broader european psytrance circuit, appearing consistently in regional festival roundups and community lists of recurring psy gatherings.