British singer Zayn Malik has revealed that his favourite Bollywood song is 'Chaiyya Chaiyya' from Shah Rukh Khan starrer 1998 film 'Dil Se'. "It's like a scene on a train," he added while talking about the song. Zayn further revealed that his favourite Bollywood films are 'Kabhi Khushi Kabhie Gham' and 'Devdas'.