[7] Valentine has collaborated as a co-writer and dramaturg with Aboriginal director and choreographer Stephen Page on many productions for Bangarra Dance Theatre since 2011,[8] including Patyegarang in 2014[9] Bennelong in 2017,[10] and Wudjang: Not the Past in 2022.
[11] Valentine first worked with Vicki Gordon Music Productions to create the First Nations show Barefoot Divas, Walk a Mile in My Shoes.
[citation needed] In 2016 Gordon commissioned Valentine and Ursula Yovich to co-write the First Nations rock musical Barbara and the Camp Dogs.
[17] In 2022 Valentine was commissioned by Neil Armfield to co-write the libretto with Christos Tsiolkas for a modern oratorio about the 1972 murder of George Duncan in Adelaide.
With music composed by Joseph Twist, it was performed as Watershed: The Death of Dr Duncan to critical acclaim at the 2022 Adelaide Festival.