Sir Elton will play piano on Cyrus' cover of 'Nothing Else Matters'
The likes of Missy Elliott, Flea and LL Cool J have also sent their best wishes to the rap mogul
Here's our pitch for the perfect gory finale...
Work is "about halfway through" on the new record, says producer Andrew Watt
The viral sensation kills on YouTube and has mega-fans in Dave Grohl and Tom Morello
Producer Andrew Watt described the session as "the best jam of all time".
"It's just returning to family. I'm extremely comfortable with those people"
This is third single from the Red Hot Chili Peppers' guitarist's upcoming album, 'Maya'
The event will take place this Saturday night (September 12)
"In pondering him, a wave of appreciation washed over me"