PETER SOHN’S ELEMENTAL, which takes place in a world populated by anthropomorphised versions of fire, wind, earth and water, is one of the feel-good stories of the year: not just because it turned things around at the box office after the slowest start for a Pixar movie, but because the movie itself is a charmer, packed with some of the animation studio’s most beautiful sequences. Here, writer-director Sohn talks us through the film’s key moments.