Theatre Mamusidom

Blue Mountains Theatre


Once again, the production of Orchids in the Moonlight by Carlos Fuentes has had to be cancelled on medical grounds, this time with four of the production team falling victim to the corona virus two weeks before the show's opening. Undeterred, we intend to carry on and look forward to presenting the play in the first half of the New Year. 

Further details will be forthcoming soon.


Female actor aged 45+ is invited to express interest in the next production. Please ring Liz on 0477827752 or write to



drawing by John Ellison





Enquiries Liz on 0477827752



Theatre Mamusidom


about us 


Located in the upper Blue Mountains ,  Theatre Mamusidom is a newly formed vibrant company established by Liz de Koster in 2021 .

After an absence from the stage for several years owing to caring for her husband in his final years, Liz has eagerly resumed  her former acting and directing skills with the formation of Theatre Mamusidom. The aim of the company is to produce excellence in theatre in a wide spectrum of drama - from tradition to innovative, by playwrights, past and present from within Australia and abroad.

Liz explains “there is so much acting talent in the Blue Mountains and room for a companion to the Blackheath Theatre Company, of which I am an enthusiastic member and currently oversee the Local Script Development Program.”

Puzzled by the name Mamusidom?  Liz explains “my parents were Polish and it means  "Mother Home”.

Liz de Koster is the widow of the late and well-known local artist, Jose de Koster whose autobiography, "Fragments of a Journey, A Fistful of Life" Liz edited and published, extracts from which can be seen on





scenes from The Picasso Affair

Orchids in the Moonlight

drawing by John Ellison

Expressions of interest


Please support Theatre Mamusidom

Would you like to get involved - as actor, director,lighting/sound, front of house, promotional, sponsor etc. Contact Liz de Koster. at or on 0477827752

Sound and lighting technician

Theatre Mamusidom is requiring a sound and lighting technician for its  production in early December. Please ring on 0477827752 or write to Liz at