Live Aid

The Beatles legend hadn't played live since the 1980 assassination of his former bandmate John Lennon.

David Bowie threatened to pull out of the show if he wasn't allowed to introduce the video.

From once-in-a-lifetime reunions to thrilling duets to unexpected covers.

Rob Halford recalls spending most of the day headbanging in the crowd.

Band’s retrospective video series covers their triumphant 20-minute show in 1985.