[4] Shortly before Mirror Reaper's recording began, drummer and cofounder Adrian Guerra left the band due to health concerns and was replaced by Jesse Shreibman on drums.

In love and respect to his memory, we reserved an important yet brief section in the song for him that features unused vocal tracks from our last album.

[6] Due to CD and vinyl time limitations, the track was divided on those releases,[11][12] but its initial, singular form is retained on the album's digital version.

[15] Mirror Reaper closes with a section featuring guest vocals from Erik Moggridge, ending somberly and gently.

review for the album, Cole Firth wrote, "Mirror Reaper is certainly an outstanding accomplishment in the Bell Witch catalogue.

"[14] Writing for PopMatters, Thomas Britt praised the meaningfulness of the song's protracted length, saying, "The concluding impression, through repeated listens, is that Mirror Reaper is appropriately scaled to its subject and stakes [...] Implicitly, the record poses the question: If this hour-plus feels long, what must forever feel like?