Baroque flavoured funeral Doom instigated by Kostas Panagiotou, editor of doom-metal.com, originally hailing from Antwerp, Belgium. PANTHEIST, as a duo of Panagiotou and guitarist Nicolas, released a six song demo called '1000 years', this set featuring Lawrence Van Haecke from IN SOMNIS and WIJLEN WIJ on session bass, being recorded and mixed in Templa Libitina between November and December 2001. The song 'Envy Us' was notably based on both Chopin's Prelude in C Minor and Beethoven's Symphony No. 7, 2nd movement. The band employed demo producer Stijn Van Cauter of WIJLEN WIJ, BEYOND BLACK VOID, TEAR YOUR SOUL APART, COLD AEON, DANCE NIHIL, IN SOMNIS, FALL OF THE GREY WINGED ONE, FORBIDDEN FIELDS and ORGANIUM and UNTIL DEATH OVERTAKES ME as live session guitarist.

In April 2003 Finnish imprint Firebox Records released the album 'O Solitude'. These tracks had been laid down by Panagiotou together with Lefterison baglama, acoustic guitar and oud with Hans on double bass.

Live work into April 2004 had the band, now featuring IN SOMNIS drummer K. 'Soporifer' Villez, united with WHILE HEAVEN WEPT and MOURNING BELOVETH for European shows.

Second album 'Amartia' surfaced on Firedoom Music in March 2005. That September Serpent's Lair Productions put out the EP 'The Pains Of Sleep'. Included would be a cover version of KATATONIA's 'For Funerals To Come'.

PANTHEIST personnel vocalist Andy Semmens and keyboard player Kostas Panagiotou united with Justin Greaves of ELECTRIC WIZARD and bassist Dominic Aitchison to formulate CRIPPLED BLACK PHOENIX, an expermental Metal collective. This band unit, recording a debut album in June 2006, expanded to incorporate guitarists BLESSING THE HOGS man Nial McGaughey and GONGA's Joe Volk plus Mark Ophidian from ANIMALS WITH MACHINERY.

The 2008 roster of PANTHEIST numbered Kostas Panagiotou and Andy Semmens joined by INDESINENCE guitarist Ilia Rodriguez, bassist Mark Bodossian, of CHALICE, ESOTERIC and MOURNFUL CONGREGATION, drummer Sterghios Moschos, of DE PROFUNDIS, and the AKERCOCKE, CORPSING and CONCEPT credited guitarist Peter Benjamin.