Elton John and Taron Egerton perform “Rocket Man” at Cannes (VIDEO). – Slate

Elton John and Taron Egerton perform “Rocket Man” at Cannes (VIDEO).  Slate

Elton John, the subject of Rocketman, and Taron Egerton, the star of Rocketman, joined forces at the Cannes Film Festival on Thursday to sing “Rocket Man” …