[1] She describes: "I compose microtonal music strictly by ear and leave it to others to analyze, so you won't find ratios or mathematics here.
Her Martians video was recorded there in 2003 (commissioned by NASA) to promote the prospect of humans living on Mars.
Walker had already released her debut studio album titled Blue Cartoon in 1989, before moving to work as ZIA.
[4] She has composed using various equal temperaments, including the Bohlen–Pierce scale: Stick Men (1991), Love Song, and Greater Good (2011).
[3] In the early years ZIA has also performed with Emergency Broadcast Network, A Flock of Seagulls, and Marilyn Manson in the Boston area.