If the festival’s worth is judged by the opening, things augur well for this 73^rd edition of the Venice Film Festival. Damien Chazelle’s endearing, cinephile, unabashedly romantic musical La La Land is still one of the most buzzed about titles here. We spoke to the director, and to his female star Emma Stone who carries the film along with Ryan Gosling about what it means to make a classic Hollywood musical in the 21^st century.