Docter conceived Soul in January 2016, examining the origins of human personalities as well as the principle of determinism. Through his 1st Conference with Jones, he pitched the idea about spacetime involving souls with personalities. The film's producers consulted different jazz musicians, which include Herbie Hancock and Terri Lyne Carrington, https://river2j95l.blog-eye.com/26855812/detailed-notes-on-soul