Songwriter, flautist, and vocalist had been battling prostate cancer since 2013.
The white, American, guitar-based mainstream continues to find an edge on ballots
Dire Straits, The Moody Blues, and Sister Rosetta Tharpe round out the 2018 class.
Nina Simone, Depeche Mode, and Judas Priest are among the other finalists.
Pearl Jam, Tupac Shakur, PJ Harvey, and Alanis Morissette among the newly eligible acts.
Accolades for Worst Kept Secret, Most Formidable Lungs, and Greatest Living Rock Star!