He doesn't need vocal lessons, maybe vocal lessons are the cause he is doing this.
Because he is " unleashing the new register " , his original and natural singing style is what we love and like.
Something happened in 1993-94 that made him change his style, he got nasal, forgot the cool raspy voice for a while
and started to sing real high on Your Filthy little mouth and he has been doing it since then , when he got
the ability to sing higher he started to yell like crazy on Panama and other classics, he needs a non yes-man
guy that knows exactly how he used to sing and re-teach them the classic way and i'm sure he can get the classic whistle scream back too.
I know he likes to sing what he wants but back then he used to make up parts that had nothing to do with the song
but they sound real cool and on key !
So this is love : at 3:58 and 4:10
http://www.youtube.com/watch?v=w7sVbstkixM
Romeo Delight 3:08 and 3:16
http://www.youtube.com/watch?v=gayoRt2qjuY