I would never have guessed: I reviewed Jamie Cullum at the Cheltenham Jazz Festival and at the Proms (photo credit: Sisi Burn) , and found his performance energy astonishing. But, he writes today - with quite some honesty and candour - that he's been really going through it with voice troubles:
"I got very sick in the first tour in the USA of last year. In an effort to get through the schedule I pushed my voice in new ways which, though I was managing to make the necessary sounds, left my vocal chords ravaged and raw. I found that I constantly had a sore throat and that my voice would hurt when I sang. A combination of never really studying the mechanics of how my voice worked, dealing with a persistent form of the flu and general exhaustion had left my singing voice in a precarious place that I had never experienced before.
"It was a scary time ...."
The full story - and how he plans to put it right - are on Jamie Cullum's Terrified Studios blog