 Although Martu production of art for market had gradually expanded with their introduction to new media, it became a much greater part of the Martu economy with the formation of Martumili, an arts cooperative.Art conveys traditional topics, usually Dreaming tracts, but the materials used, like acrylic on canvas, are mostly modern.Unlike foraging, which occurs regularly, art production is performed on occasion and single compositions may be composed across multiple brief sittings.