Mausoleum is a live album with songs by the Danish heavy metal project Myrkur, rearranged for acoustic and choral performances.

[2][3] Politiken's Pernille Jensen called Mausoleum magnificent and evocative and described it as "metal with an elf-like girls' choir" that gave her goosebumps.

[2] Mattias Kling of Aftonbladet wrote that Mausoleum sees Myrkur go as far as possible in infusing black metal with mystical, eerie and folkloric elements.

[3] Christoffer Bertzell of Nöjesguiden said it is "hard to not be moved" by the "ominous and gloomy melodies" and recommended people to try to recreate the original concert setting by listening to the album "in a dark and cold cave".

[5] AllMusic's Thom Jurek wrote that the stripped-down versions of the songs reveal both Myrkur's and the entire black metal genre's heritage from European folk music, and that the interplay between Bruun's piano and Jørgensen's guitar adds a classical element.