Production sound mixer Steve Morrow, Grammy-winning music mixer Nick Baxter, and re-recording mixer Dean Zupancic talk about grabbing crowd scenes between sets at the Stagecoach and Glastonbury music festivals, how doing impulse responses in each of the venues allowed them to recreate the sound of the arenas in post-production, and how Bradley Cooper was not your typical first-time director.

Steve Morrow, Production sound mixer

Nick Baxter, Music mixer

Dean Zupancic, Re-recording mixer