Theatre Mamusidom

Blue Mountains Theatre

upcoming events

Drawing by John Ellison

A successful season and now on to the next show! The Picasso Affair by John Shand, has been the first production of the newly formed Theatre Mamusidom, the first of many more to come. The next production,  Orchids in the Moonlight by renowned Mexican writer, Carlos Fuentes is a beautiful dream play about two women exiled in Hollywood. Set in Venice the day Orson Welles died,this extraordinary play stretches the audience's imagination and will leave the audience with a lasting experience.



Enquiries Liz on 0477827752



scenes from The Picasso Affair

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





Expressions of interest


If you would like to register interest in contributing to the company's growth in any capacity - actor, director, lighting and/sound technician,  front of house please email on the form provided on the contact page.

We invite sponsors to maintain and grow Theatre Mamusidom. Please contact on the form provided

results of raffle

The ticket for High Tea at the Fairmont Resort and Spa was won by Mrs. Ellie Beagley of Katoomba