IT IS THE moment rock fans thought would never happen. On July 4th Oasis, the greatest British band of their generation, will go on stage for the first time in 16 years. Such a thing seemed impossible given the group’s spectacular combustion in 2009, after a fight between Liam Gallagher, the lead singer, and his brother, Noel, the main songwriter. In the intervening years the siblings fired shots at each other in the press and on social media. (Noel famously described Liam as “the angriest man you’ll ever meet. He’s like a man with a fork in a world of soup.”) But now, they claim, “The guns have fallen silent.”