LOS ANGELES, Aug. 18, 2014 /PRNewswire/ -- Guitar Center announces DJ and producer Steve Aoki as the latest artist ambassador in the retailer's "All we sell is the Greatest Feeling on Earth" campaign. The Grammy nominated DJ stars in the third commercial spot of the campaign, following appearances by Questlove (The Roots) and James Hetfield (Metallica). Aoki's spot will debut nationwide on August 18, 2014.