• Olegas - by Constantine Koukias, Libretto by Natasha Cica
• Tesla - Lightning in His Hand. - An opera in two parts, sung in English By Constantine Koukias.
• The Divine Kiss (Das Böse ist Immer und Überall) - An opera sung in Modern and Ecclesiastical Greek, Hebrew, German and English by Constantine Koukias. Dedicated to the memory of Józef Wawrzynczak
• To Traverse Water - An Opera in Two Parts Sung in Ecclesiastical & Modern Greek by Constantine Koukias
• Days and Nights with Christ - An opera by Constantine Koukias
• Prayer Bells - A concert piece by Constantine Koukias
• The Lunch Box - A chamber opera by Thanapoom Sirichang, sung in Thai

In late 1999 IHOS formed the IHOS Music Theatre Laboratory, a sub-section of the main company that provides training for young opera / music-theatre performers, as well as commissioning and collaborative opportunities for Australian composers, directors and designers.

Works premiered edit

• 2007 As if Electronically Controlled (Full Premiere) Christopher Williams
• 2007 Colonial Pictures Simon Reade
• 2006 As if Electronically Controlled (Workshop only) Christopher Williams
• 2005 The Death of Chatterton Matthew Dewey
• 2005 Da Ponte in Absentia Constantine Koukias
• 2004 Blood Lights Ian Cresswell
• 2004 A Priest's Passion Matthew Dewey
• 2004 Succubus Michael Lampard
• 2004 For No Apparent Reason Myles Griffith
• 2003 The Fall of the House of Usher Maria Grenfell
• 2003 Creatures of the Wind Kate Moore
• 2003 Scenes from a Calabrese Opera Angelina Zucco
• 2002 Eden's Bequest (second stage) Rosemary Austen
• 2002 Harmony Allan Badalassi
• 2002 Touch Wood Claudio Pompili
• 2002 Antigone Sketches Constantine Koukias
• 2002 POP Sally Rees, Matt Warren
• 2002 A Lizard Between Her Breasts Raffaele Marcellino
• 2001 Happy New Ears Graeme Leak
• 2001 Death by Defenestration Joe Bugden
• 2001 Eden's Bequest Rosemary Austen
• 2001 Sway Lisa Morisset
• 2001 Slip - Synthetic Spaces Christos Linou Hugh Covill
• 2000 Images from the Life of Nikola Tesla Constantine Koukias
• 2000 The Tesla Project Constantine Koukias

Notable Laboratory Alumni edit

• Matthew Dewey - Composer
• Rachel Wenona Guy - Performer, Singer, Writer, Visual Artist
• Sarah Jones - Singer
• Michael Lampard - Singer and Composer
• Craig Wood - Performer and Composer
• Christos Linou - Performer / Choreographer

• IHOS Music Theatre and Opera
• The Tasmanian Composers Collective