Getty Images Christopher Nolan is defending casting Travis Scott in his highly anticipated next movie, The Odyssey. If you don't know, Travis appears as a bard in the film, and he did appear in one of the teasers for the movie. Christopher was asked about casting him, and he gave his reasoning. "I cast him because I wanted to nod towards the idea that this story has been handed down as oral poetry, which is analogous to rap," he told Time in a new profile. The famed director also defended the look of some of the armor that has been seen in promotional material.