Tetragrammatical Astygmata
Studio album by Averse Sefira
Released	March 6, 2006
Recorded	February 2005, Top Hat Studios (Austin)
Genre	Black metal
Label	Evil Horde Records (CD), The Ajna Offensive (Vinyl)
Producer	Tore Stjerna
Averse Sefira chronology
Bestien in Engelsgestalt (split w/ Secrets of the Moon) (2003) Tetragrammatical Astygmata (2006) Advent Parallax (2008)

Tetragrammatical Astygmata is the third (fifth, counting live records) full-length studio release from the Austin-based black metal band Averse Sefira. It was the last of their albums to be released on an independent metal label; in 2006, the band would jump to Candlelight and release their label debut in 2008. Much like that disc, this is split into categories; tracks 1–3 are "Blood", tracks 4 and 5 are "Flesh", tracks 6 and 7 are "Death", and tracks 8–10 are "Earth".

• All Songs Written & Arranged By Averse Sefira.

1. "Exordium" 0:41
2. "Detonation" 5:31
3. "Cremation of Ideologies" 5:50
4. "Hierpphant Disgorging" 5:18
5. "Plagabraha" 3:10
6. "Helix In Audience" 8:13
7. "Mana Anima" 6:32
8. "Decapitation of Sigils" 4:53
9. "Transitive Annihilation" 5:06
10. "Sonance Inumberate" 5:16

• Sanguine Mapsama: Guitars, Vocal
• Lady Of The Evening Faces: Keyboards, Interludes & Effects
• Wrath Satahriel Diablous: Bass, Vocal Backing
• The Carcass: Drums, Percussion

• Tore "Necromorbus" Stjerna: Additional Vocals on "Detonation" & "Sonance Inumberate"

• Arranged By Averse Sefira.
• Produced, Recorded, Mixed & Mastered By Tore Stjerna