Yesterday morning, one of the most influential radio DJs of all time passed away.
Elton spoke about Casey Kasem that evening at the Tennessee music festival Bonnaroo.
Taking the stage behind his red piano in a sequined "Rocket Man" blazer and cobalt spectacles, Elton performed the first side of his classic Goodbye Yellow Brick Road album before telling the crowd:
"I've been doing this for a long time, and the older I get, the more I love doing it… I came to America in 1970, and I just loved every second of it. And there was one guy on the radio that passed away today. Travel safely, my angel."
Elton then played Don't Let the Sun Go Down on Me in honour of the late Casey.
Ryan Seacrest, who took over the American Top 40 show from Kasem in 2004, called it a ''sad day,'' and said he first had dreams of being a DJ after hearing Casey on the radio.
Carson Daly noted that the Detroit native made the ''best music'' available ''long before MTV and the Internet,'' while Al Roker said he learned a lot from the radio host, and Nikki Sixx tweeted:
''RIP Casey Kasem who inspired all of us in radio & turned millions of people onto music.''
The 82-year-old had suffered from advanced Parkinson's disease and Lewy Body Disease, a form of dementia.