Who is King DJ?

George Klein of Memphis and Elvis Memphis Mafia fame

OR

Red Robinson of Vancouver BC – the site of Empire Stadium – the first stadium rock concert in which Elvis ruined Vancouver for all other lesser lights to follow.

the criteria – who first MCed both Elvis and the Beatles?

George knew Elvis from High School.

Red not only met and MCed, but documented the events and eventually, those became public!

Red MCed both sooner and at the same venue

when they tored down Empire Stadium a few years ago, people protested with signs that read

You are tearing down Elvis’ stage

never mind, what that stadium has mean for Vancouver sports and community events, eh?