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| Source | Rating | 
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| Allmusic |      [3] | 
 The Astral Sleep is the second studio album from Tiamat. It marks their debut on longtime label, Century Media Records. This album was reissued in 2006 with two tracks from A Winter Shadow single, released in 1990. 
Musically, this album blends the death metal style of Tiamat's debut album with gothic metal elements. Lyrically, this album features a mixture of Satanism with introspective and esoteric themes. 
 Track listing
 The Astral Sleep| Title | 
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| 1. | "Neo Aeon (Intro)" | 2:09 | 
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| 2. | "Lady Temptress" | 3:44 | 
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| 3. | "Mountain of Doom" | 4:36 | 
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| 4. | "Dead Boys' Quire" | 1:53 | 
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| 5. | "Sumerian Cry (Part III)" | 5:15 | 
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| 6. | "On Golden Wings" | 5:00 | 
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| 7. | "Ancient Entity" | 6:15 | 
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| 8. | "The Southernmost Voyage" | 3:12 | 
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| 9. | "Angels Far Beyond" | 4:41 | 
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| 10. | "I Am the King (of Dreams)" | 4:33 | 
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| 11. | "A Winter Shadow" | 5:25 | 
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| 12. | "The Seal (Outro)" | 1:52 | 
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| Total length: | 48:38 | 
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2006 re-issue bonus tracks| Title | 
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| 13. | "A Winter Shadow" (Demo) | 5:26 | 
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| 14. | "Ancient Entity" (Demo) | 5:56 | 
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| Total length: | 60:00 | 
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Notes 
 - Bonus tracks are taken from the "A Winter Shadow" EP (1990 CBR Records).
- In the lyric sheet, track 4 is titled "Dead Boys' Choir" and track 10 - "I Am the King (...of Dreams)".
Personnel
 - Johan Edlund – vocals, keyboards, & rhythm guitar
- Thomas Petersson – lead guitar & acoustic guitar
- Jörgen Thullberg – bass guitar
- Niklas Ekstrand – drums
All keyboards on this album by Jonas Malmsten. Additional guitar solo on "Ancient Entity" by Waldemar Sorychta. 
 References
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