Cher

Cher joined Lauper for a show-closing performance of her most famous song.

Her attempt at being a singer in a group of equals predated David Bowie's Tin Machine by nearly a decade.

He also shot career-changing music videos for Aerosmith, Heart and Cher.

In between all the talking, there was some rocking.

"It was easier getting divorced from two men than it was to get into the Rock & Roll Hall of Fame," she joked.

The two singers joined forces for a rendition of "Believe."

Rock's biggest stars turn up for the big event - and they all got to hug Flavor Flav.

Kool & the Gang and Dave Matthews was also in attendance at the pre-Hall of Fame event.

Michigan horror enthusiasts, don't miss out on the terrifying 'Little Bites', written and directed by Spider One of Powerman 5000.

Singer had been fighting to regain her 50% stake in the Sonny & Cher catalog.