Bloodbath is a Swedish death metal supergroup from Stockholm, formed in 1998. The band has released six full-length albums, two EPs and two DVDs depicting their performances at Wacken Open Air (in 2005) and Bloodstock Open Air (in 2010). The group consists of Martin Axenrot (ex-Opeth), Anders Nyström (Katatonia), Jonas Renkse (also Katatonia) and Nick Holmes (Paradise Lost).

Source: Wikipedia (https://en.wikipedia.org/wiki/Bloodbath)