Therion is a Swedish symphonic metal band from Upplands Väsby, formed in 1987 under the name Blitzkrieg and with early death metal roots. Christofer Johnsson on guitars, keyboards and programming, Sami Karppinen on drums, Nalle Påhlsson on bass, Thomas Vikström on vocals, Christian Vidal on guitar and Lori Lewis on vocals, with Rosalía Sairem and Chris Davidsson as touring members. The labels listed include Nuclear Blast and, since 2023, Napalm Records. The Leviathan trilogy appeared in 2021, 2022 and 2023, and the live album Con Orquesta, recorded with the Orquesta Sinfónica Nacional de México, was released on 30 January 2026.
The Swedish symphonic metal pioneers play a special set spanning Theli to the Leviathan trilogy in Ghimbav, Romania, from 26 to 30 July 2027.
