“One look at this week’s charts and you’d be tempted to think that all is well in the classical dovecote and the doomsayers have got it wrong again. But check the bottom line and the gloom is unconfined. Insiders at Universal, which released [chart-topper Hilary] Hahn on the Deutsche Grammophon label, tell me she is selling no more than 500 CDs a week in the world’s biggest market.”