Ahead of its first screening at the London film festival director Damien Chazelle answers questions on his follow-up to Whiplash, an old-fashioned musical with all-singing, all-dancing performances from Ryan Gosling and Emma Stone. Subscribe: http://bit.ly/subscribetotheBFI. Watch more on the BFI Player: http://player.bfi.org.uk/ Follow us on Twitter: https://twitter.com/BFI Like us on Facebook: https://www.facebook.com/BritishFilmInstitute Follow us on Google+: https://plus.google.com/+britishfilminstitute/