What would Darth Vader sound like if he was voiced by Darth the actor who wore the costume? Listen to this excerpt from the 2004 documentary, Empire of Dreams:

Uploaded by Guardstark on June 23, 2007.

Visual effects maestro Ken Ralston described it as “hilarious and terrifying at the same time, because we didn’t know what Darth sounded like. That was the first time we heard him. We’re like, ‘Is that it? Is he gonna be some Scottish guy? What is this?'”

A YouTube commentator pointed out that Prowse’s accent was actually “West Country English.”

George Lucas hired James Earl Jones to provide a more menacing voice. Jones talked about his contribution for the American Film Institute:

Uploaded by the American Film Institute on July 9, 2009.

In 2015, Welsh rock musician Jayce Lewis seized the opportunity to record David Prowse over a period of two days and apply modern audio technology to make him sound closer to James Earl Jones’s performance. Did they succeed?

Published on October 1, 2015.
Video owned by Devfire Entertainment Ltd © & ℗ 2015
Music owned by Devfire Entertainment Ltd © & ℗ 2014

The Force’s Mouth
Filmed by Simon Huntley
Edited by Simon Huntley & Jayce Lewis
Music By Protafield
Recorded at Northstone Studios – Pen Y Fai (Bridgend – UK)
And Queens Road Studios – Bridgend – UK