Riverside have been announced as the first of two headline acts for 2023’s Prognosis Festival. Swedish prog rockers Soen, Canadian prog metal pioneers Voivod and Colin Edwin’s supergroup O.R.k. are also on the bill, with Rosalie Cunningham and Iamthemorning among the other notable additions.
Prognosis was originally launched in the Netherlands in 2019 with Haken, TesseracT as headliners, while the 2022 edition saw