“To err is human, to air guitar is divine.” So says contestant Bjorn Turoque, one of many faux-axemen trading licks on the road to the World Air Guitar Championship Finals in this doc. Sounds stupid? Of course, but this colourful collection of showboating berks are too busy playing at being rock stars to care. A needless narrative is projected onto the event and some contestants are more likeable than others, but if you’re fond of a little fret-wanking yourself, you’ll be in shredder’s heaven. Extras include Britain’s own ‘Count Rockula’ kicking out the jams at the UK Air Guitar Championship.