James "Shamus" Culhane was the only animator to work on all of the first four animated feature-length
While at the Disney studio, he discovered while working on Hawaiian Holiday's crab sequence an animation method that involved stewing for multiple days, before drawing the entire thing in rough sketches all at once, straight ahead, without invoking the left side of the brain. He was a lead animator on Snow White and the Seven Dwarfs, animating arguably the most well-known sequence in the film, the animation of the dwarfs marching home singing "Heigh Ho". The scene took Culhane and his assistants six months to complete. During this time he developed his 'High-speed' technique of using only the right side of the brain and animating with quick dashed-off sketches.