Tonight the Music Seems So Loud: The Meaning of George MichaelSathnam Sanghera, Picador, £22WRITING about the world’s biggest pop icons is often a double-edged sword. On the plus side, authors know the public is always hungry for more (just see the volume of unofficial Taylor Swift biographies released in recent years). But minus side, they need to find a new angle to avoid treading over old ground.