Who recorded the vocal version of McDonald's “I'm Lovin' It” used in the 2003 campaign?

Justin Timberlake recorded the vocal version of McDonald's “I'm Lovin' It” used in the 2003 campaign.

The campaign introduced “I'm Lovin' It” as a global McDonald's branding platform. Timberlake's recording helped turn the short musical hook into a recognizable pop-culture sound, while the phrase itself became the company's principal slogan in many markets.

The song was produced by The Neptunes, the production team associated with Pharrell Williams and Chad Hugo. That connection sometimes leads people to name Pharrell as the vocalist, but Timberlake performed the credited vocal recording used for the campaign.

The slogan's musical identity was an important change from older McDonald's campaigns built around jingles such as “You Deserve a Break Today.” It linked the brand to contemporary pop music and a younger international audience.