Already much buzzed about due to that first look pic showing Michael Fassbender wearing a Frank Sidebottom-style papier-mache head, the footage from Lenny Abrahamson's comedy about a gonzo rock band was the biggest hit among the assembled journalists. The focus here is on Domnhall Gleeson, effectively playing Jon Ronson (on whose experiences the film is based) as he joins a band, only to find that they're all one capo short of the fifth fret. We got to hear Fassbender speak as Frank, in a deep, rich American accent, but there wasn't even a hint of the head coming off.

And there were plenty of laughs, too, as Gleeson's character adjusts to the methods of a group that think outside the box. "Somebody's thinking in the key of C!" bellows Frank, as he and his cohorts run around in a circle. "It's me! Sorry" yells Gleeson, who is promptly decked by Maggie Gyllenhaal, as the band's thereminist. Highly promising.