There is an article in the Sunday Mirror (UK) saying after seeing doctors about his inability to sing high notes like he used to, Jay has just been diagnosed with Reinke's Edema, which is apparently common among heavy smokers.
On a cold winter evening in 1997, Jamiroquai played a one-off concert at Battersea Power Station in London, their last live concert for over 18 months whilst the band entered the studio to record Synkronized.