In 2022, Ellefson formed the death metal band Dieth with Guilherme Miranda on guitar and vocals and Michał Łysejko on drums. The band released their first single, In the Hall of the Hanging Serpents, on July 13, 2022. The band released three more singles and their first album To Hell and Back in 2023. Song Walk With Me Forever from the same album marks Ellefson's first time in his career singing lead vocals.
In 2022, Ellefson formed the death metal band Dieth with Guilherme Miranda on guitar and vocals and Michał Łysejko on drums. The band released their first single, In the Hall of the Hanging Serpents, on July 13, 2022. The band released three more singles and their first album To Hell and Back in 2023. Song Walk With Me Forever from the same album mar.ks Ellefson's first time in his career singing lead vocals