Mike Kerr, the frontman of the British rock band, swore at the crowd during a bad-tempered set at BBC Radio 1’s Big Weekend. Live music is a two-way street, writes Louis Chilton, and Kerr should have known better than to expect automatic adulation

Not sure which music festivals to hit this summer? The Independent’s culture staff have you covered, from Americana and country-themed events in the Kentish countryside to spiritual experiences in the lush Welsh mountains