Trent Reznor called Youssef last month onstage at a show
Tributes and memories from Flea, the Who, Salman Rushdie and more
New York legend, who helped shape nearly fifty years of rock music, underwent a liver transplant in May
Musician later joined a recent incarnation of the Yardbirds
'Seriously getting the band back together in heaven now,' reads a post on Nelson's Facebook
Genre-bridging musician and producer was known for work with Frank Zappa, Miles Davis
Low-profile musician wrote "Cocaine," "After Midnight," and "Call Me the Breeze"
Member of Uriah Heep, Wishbone Ash, had pancreatic cancer
Doors keyboardist battled bile duct cancer
Rock and Roll Hall of Famer played on Seventies funk classics
Veteran studio hand had been hospitalized last week
Sang harmony with Smokey Robinson on 'You've Really Got a Hold On Me'
Vocalist sang on 'Superstar' and 'Papa Was a Rolling Stone'
Sang lead on 'Papa Was a Rollin' Stone'
Singer was younger peer of Muddy Waters and Howlin' Wolf