Keeping with the theme of artists that killed themselves with drugs and alcohol, I gotta say Layne Staley. Almost any Alice in Chains acoustic song will work.
Wow ...your right too hard I can think of Zepplin,Beatles,nirvana,stp,cash,Elvis,hendrix,Jop lin, queen really there is WAY too many artists yet songs. If I HAD to choose mine would be cliché' zepplin... stairway . Second pick...of the wall but Elvis....in the ghetto