I found who I was talking about Chet (just forgot his last name, erg)
The guy I was thinking of was a self taught Tromobone jazz player.
I found this site:
http://elvispelvis.com/suicide.htm#1
Seems all the musician suicides have one thing in common substance abuse/deppression.
Sad they could not find peace in there suffering in an alternative venue.
Chet Baker. BTW, interesting site, if kind of depressing.