Mnemosynean is an extensive collection of the band's rarities and B-sides - find out more here.
The track originally features on the band's eleventh studio album, 'City Burials'.
The track is taken from their forthcoming live album 'Dear Air', which is set for release in November.
The recording was captured during Katatonia's lockdown session, which took place in May 2020 at Studio Grondahl in Stockholm.
The band have also announced details of a live stream show, which will see the live premiere of three tracks from their latest album 'City Burials'.
The band reveal another track from their forthcoming album, 'City Burials'.
Swedish rock quintet Thenighttimeproject return with their second LP, 'Pale Season'. The title refers to the blank voids of memory thanks to monotony. Will this new record fit that description or will it excel its predecessor as a melancholy rock masterpiece?