After 2006 he started working with a new vocal coach and she has changed his singing technique. Most likely his voice is still damaged, a shadow of what it was in 1990 in terms of range, power and tone. But in the last few years I think he has learned how to make the most of what he has left, plus he stopped smoking. He has gone downhill again in the last 2 months- started singing nasal and whingy once more but lets hope it's temporary.