He may very well get 'spent' quickly on the live trail anymore. But-- he still sounds fine on the last three BJ cds. Look at Coverdale--the man clearly struggles live anymore. Yet he can still pull it off to some degree in the studio. When your voivce can rest, it CAN come back and be ok--even at DC's age (tho BJ is no spring chicken anymore either). But the rigors of the road for a rock singer get tougher & tougher. Amazing how any of 'em still tour at all.. but I degress- Jon's voice hasn't changed THAT much as he was never Steve Perry,eh? T