AUSTIN, Texas — South By Southwest shows off a new side of The King of Rock and Roll.

HBO's upcoming documentary “Elvis Presley: The Searcher” premiered at the film festival Wednesday, March 14.

His ex-wife Priscilla Presley appears in the film and is an executive producer. The story is spread across three hours, and two seperate films.

"We didn't have any holds barred and we would prefer to tell the story rather than anyone else because we lived it — Jerry Schilling and I."

The documentary will start airing on HBO April 14.