The band has tried to re-release the song "Curse Of Izanagi" several times, however two people involved in the recording died suddenly. Frontman Mirai Kawashima stated, "I am not sure about the linkage between the song and these incidents, but I've decided to seal this track forever, as it is too sinister".

If you include "Ghastly Funeral Theatres EP", the initial letters of all of Sigh's releases spell out the name of the band.

Scorn
Infidel Art
Ghastly Funeral Theatre EP
Hail Horror Hail

Scenario IV: Dread Dreams
Imaginary Sonicscape
Gallows Gallery
Hangman's Hymn

Scenes From Hell
In Somniphobia
Graveward
Heir to Despair

Shiki