The sonic possibilities of both electric and acoustic harp are still being discovered. This makes the harp a exciting instrument for collaborative music and new composition. Since 2009, Mary has worked on various productions in Jame's Hullick's Bolt Ensemble. ( )These include 2 international tours of Tokyo, London and Edinburgh and seasons at the Meat Market in Melbourne. She collaborated with Environmental Sound Artist, Ros Bandt ( curating a ten harp installation for the world Harp Congress in Sydney 2014 entitled, "Windharps: an Aeolian Symphony" which incorporated recordings of Bandt's Environmental sound sculpture, Aeolian Harp, set up in Lake Mungo. Since then, she has taken part in live sound installations with Ros Bandt, including her Jaara Jaara Project . performed in the bushlands of Victoria. 

Mary is one half of the Doumany/Brophy project with film maker, composer, writer and artist Philip Brophy.( Their latest work "Trials and Torments" references the plights of 9 ancient Greek heroes/ gods, utilising Mary's  sampled and real time vocals and harp with Philip on drums.

In late 2018, The Narcoleptor was launched with Miles Brown on Theremin, inspired by early space and horror movie soundtracks, and informed by Mary's improv collaborations with Tokyo experimental players and Miles' extraordinary background and experiences across genres. (

Whilst in Japan, Mary has collaborated with cellist Morishige, bassist Tetsu Saitoh, (, live artist Akiko Nakayama, pianist Yoko Arai, guitarist Tetsuya Akiyama, vocalists Maki Hachiya and Ami Yamasaki, dancer Yu Kimura, saxophonist Junji Hirose, drummer Darren Moore, guitarist/banjoist Cal Lyall, sound designer MK Chiharu and shamisen player Yumiko Tanaka.

Other Melbourne based collaborations during 2018 included violinist Lizzie Welch, cellist Judith Hamman, and vocalist Bonnie Landers (US).